Sildenafil: How Long Does Viagra Last
This article discusses how long Viagra lasts, what it is for, and alternative methods of treating erectile dysfunction.
How Long Does Viagra Last?
Sildenafil is a common medication used to stimulate erections in people with erectile dysfunction (ED). It can also treat pulmonary arterial hypertension (high blood pressure affecting the lungs and heart).
For treating ED specifically, Viagra is the well-known brand-name version of this drug.
Many factors can influence how long Viagra takes to start working. In general, Viagra takes about 30 minutes to produce noticeable effects.
But your diet, your overall health, the medications you’re taking, underlying conditions, and much more can all affect the amount of time Viagra takes to work in your body and how long it lasts.
An erection happens when nerves in your penis are stimulated.
As a result, muscles around two cylinder-shaped chambers of spongy material along your penis, known as the corpora cavernosa, relax and allow blood to flow in, causing an erection.
With ED, your nerves don’t communicate properly with your brain and blood doesn’t flow properly into the corpora cavernosa. Taking Viagra relaxes the walls of your blood vessels and lets blood flow more easily into the parts of your penis that cause an erection.
Viagra normally starts working 30 to 60 minutes after you take it in oral tablet form. It may take up to 2 hours to work.
Viagra doesn’t work on its own. You’ll still need to feel sexually aroused to get an erection. Feeling relaxed and comfortable can also help Viagra take effect sooner.
On average, Viagra lasts between 2 and 3 hours before its effects start to diminish. Viagra can last up to 5 hours or longer depending on your dosage, your body’s metabolism, and other external factors.
Depending on how your body metabolizes it, you may be able to get an erection several times with Viagra in your system. Viagra probably won’t make you last longer in bed, though. No research has proven definitively that Viagra can increase how long you can have sex.
Viagra may not work again immediately after you’ve had sex. Normally, you can’t get another erection right after ejaculating because your body isn’t physically prepared for it.
This is known as the refractory period. It may only last a few minutes, but it can last as long as a few hours or days. However, a 2000 study found that Viagra may decrease this recovery time.
Several important factors can influence how long Viagra lasts for you:
- Dosage. The amount of Viagra you take affects how long it stays in your system. The smallest available dose, 25 milligrams (mg), won’t last as long as the largest available dose, 100 mg. But taking a higher dose isn’t always recommended, as it may not be safe for you.
- Age. As you get older, your metabolism slows down. So Viagra may last longer as you age. In general, you may notice Viagra works for a longer period when you’re 65 or older.
- Diet and lifestyle. Eating a large meal or a lot of high-fat foods right before you take Viagra can keep it from being metabolized quickly or effectively. But this can also make it last longer as it’s metabolized along with your meal. Drinking alcohol or smoking can also decrease blood flow to your penis, making Viagra less effective or shorter-lasting.
- Medications. Some medications, especially antibiotics such as erythromycin (Ery-Tab), clarithromycin (Biaxin), and ciprofloxacin (Cipro), can interact with Viagra and affect how long it lasts.
- Overall health. Certain existing conditions can affect how long Viagra lasts and how well it works for you. Diabetes, nervous system conditions like multiple sclerosis (MS), and heart conditions like atherosclerosis (fat buildup in your blood vessels) can all make Viagra less effective and not last as long. Some kidney conditions may make Viagra last longer because of the condition’s effect on your metabolism.
- Psychological state. Feeling anxious, nervous, depressed, or stressed can all influence how your body responds to sexual stimulation. If you’re not relaxed or comfortable during sex, or if you have performance anxiety because of past sexual experiences, Viagra may not last long or be fully effective.
Viagra usually leaves your system after 2 to 3 hours. Depending on your metabolism, Viagra can take 5 to 6 hours to fully leave your system.
A higher dosage will take longer to leave your body. A 25-mg dose may wear off after a couple of hours, but a 100-mg dose may take nearly four times as long to leave your system.
Viagra often lasts for a few hours. You won’t normally have an erection the entire time, as Viagra is only used to help increase blood flow. If you don’t think Viagra is working fast enough, try masturbation or foreplay to help stimulate arousal.
If Viagra doesn’t work after 30 minutes, don’t take any more than the daily dose that your doctor prescribed. Never take more than 100 mg of Viagra in a 24-hour period.
Too much Viagra can cause severe headache, low blood pressure, and orthostasis (drop in blood pressure when standing) that can lead to fainting.
Higher doses can also cause priapism, a painful erection that lasts longer than 4 hours. This can damage penis tissue because blood stored in the penis isn’t receiving any oxygen. Get emergency treatment right away if this happens.
Talk with your doctor before you take Viagra or any related medication for ED. It’s important to take a safe dose and work out a clear understanding of how much you should take in a 24-hour period.
Some medications for heart conditions, such as nitroglycerin and other nitrates, can interact dangerously with Viagra and cause your blood pressure to drop too low.
Sildenafil: How Long Does Viagra Last?
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Viagra, also known by its non-branded name sildenafil, lasts for up to 4 hours after you have taken it. This can vary upon different factors such as your age, diet, existing health conditions and the dosage you have taken. Viagra works by allowing the smooth muscle in the penis to relax, so that blood can enter and cause an erection.
How long does Viagra last for?
The effects of Viagra usually last for around 4-6 hours. Levels peak around the 1 hour mark, but this can vary, depending on whether you have eaten beforehand. It takes around 3-5 hours for blood levels to halve, and the effectiveness of Viagra starts to decline around this time.
How long will an erection last with Viagra?
A table showing how long an erection lasts for after taking Viagra
| Time after taking Viagra | How long erections last |
| No Viagra | 7 minutes |
| 1 hour | 33 minutes |
| 8 hours | 23 minutes |
| 12 hours | 16 minutes |
One hour after taking Viagra, an erection can last for 33 minutes, after 8 hours, an erection can last for 23 minutes, and after 12 hours, an erection can last for up to 16 minutes. This can vary from person to person, in fact, for most people, the effects of Viagra will wear off after 3-4 hours.
Can Viagra make you last longer?
If you are finding it difficult to maintain an erection during sex, then yes, Viagra can help you last longer in bed. However, Viagra will not help you to keep an erection after ejaculation. Losing an erection after an orgasm is known as the refractory period. This is normal and Viagra will only help to you to get an erection after this period when you are sexually aroused.
How long does it take for Viagra to work?
Viagra takes around 30-60 minutes to work, but it has been known to work in under 30 minutes for some men. Others will find that it takes slightly longer to work. Those with a higher body weight will find that it may take slightly longer, as the drug has a larger area to get through. Those with higher metabolisms will find that the drug works in around 30 minutes or less. An empty stomach and a relaxed state of mind can also help sildenafil to work quicker.
Factors that affect how long Viagra lasts for
Tips how to make the effects of Viagra last
Eat a healthy meal beforehand
If you consume a meal that is rich in fats and carbohydrate, it may take Viagra longer to work, and reduce its effectiveness. An empty stomach can make Viagra work quickly, but it is not likely to last very long. You should try to have a balanced meal before hand to increase the likelihood of Viagra lasting longer. Avoid foods that are low in carbohydrate and fats and try to consume foods rich in fibre and protein. You should avoid drinking grapefruit juice as this can reduce the effectiveness of Viagra.
Reduce alcohol consumption
Alcohol reduces the amount of blood that reaches the penis, which can have a negative effect on Viagra. Reducing alcohol consumption can allow Viagra to have a longer lasting effect.
Get in the right frame of mind
Viagra only works when there is sexual arousal. It is important to get yourself into the right frame of mind. Stress, anxiety and nervousness can all have a negative impact on the action of Viagra. You should try to relax and feel as comfortable as possible, in order to benefit from the full effects of Viagra.
Increase the dose
A higher dose of Viagra is likely to be more effective and have a longer duration of action. However, some men may not necessarily need the highest dose. Higher doses are more likely to cause side-effects such as headache and facial flushing. Your doctor will prescribe you the dose that is most suitable for you. If you find that this is not effective, you should talk to your doctor about trying a higher dose. If you are already on the highest dose, you should speak to your doctor about trying an alternative erectile dysfunction tablet.
Exercise
Exercising regularly can reduce levels of stress and anxiety, allowing you to relax during sex. Consequently, this can have an improvement on the duration of an erection. Exercise also helps to increase blood flow around the body, including the penis. This can help to improve ED overall.
Stop smoking
Smoking can have a negative impact on your sex life, including the duration of an erection. Quitting smoking improves the health of you heart and can improve blood flow to the penis.
What other factors can affect how long Viagra lasts?
Age
As you get older, your metabolism slows down. This means that Viagra is likely to last longer in older men, as their bodies are unable to excrete the drug as quickly as younger men.
Medication
Certain medication can reduce the effectiveness of Viagra, which means that it will not last for as long as it should. You should check with your doctor or pharmacist to see if any medication that you are taking can have an effect on the action of sildenafil.
Can you take more Viagra to make it last?
No, you are only able to take one tablet within a 24 hour period. Viagra stays in your system for around 24 hours, so taking more than one tablet within a 24 hour period can increase the chances of experiencing unwanted side effects.
Do Viagra Connect and sildenafil last longer than Viagra?
There is no difference between Viagra Connect, sildenafil and Viagra. They all contain the same active ingredient, sildenafil citrate. Viagra Connect is only available in the 50mg dose, whereas sildenafil and Viagra are available in a 100mg strength. So, sildenafil and Viagra can last longer if you are using 100mg. You can read more about the difference between sildenafil 100mg and 50mg.
Which tablets last longer than Viagra?
Tadalafil is an alternative medication, that lasts for longer than Viagra. Tadalafil is available in 4 different strengths. The 10mg and 20mg option should be taken around 30 minutes before sexual activity and can last for up to 36 hours. The 2.5mg and 5mg option should be taken every day, and will have a continuous effect. This can allow you to achieve and maintain an erection spontaneously. Tadalafil 2.5mg and 5mg should be taken for those who are sexually active on a regular basis. Your doctor or pharmacist will be able to explain the difference between sildenafil and tadalafil, and which one is more suitable for you.
How long does Viagra stay in your system?
It usually takes around 24 hours for Viagra (sildenafil) to leave your bloodstream. The maximum effect can usually be felt after 1 hour and from this point, the concentration of sildenafil will steadily decline. From around 8-10 hours after taking a tablet, the effects of Viagra are usually not strong enough to have an effect, even though the drug is still present in your blood. However, this is not always the case and some men may notice the effects of Viagra for up to 12 hours after taking a tablet. It takes 24 hours for sildenafil to leave your system.
So, how long does Viagra last?
Viagra will last for around 4 hours after you take it. This does not mean that you will have a constant erection for 4 hours, but you will be able to achieve an erection when you are sexually stimulated, for up to 4 hours after. However, it is important to remember that this is an average and not the case for everyone. The length of time that Viagra lasts can vary depending on a number of factors, such as age, mental state, weight, pre-existing medical conditions, dosage, food and alcohol intake. If you find that Viagra is not lasting as long as you would like, you should speak to your doctor or pharmacist about trying a higher strength, or another medication that lasts longer than sildenafil, such as tadalafil.
Whilst all of our content is written and reviewed by healthcare professionals, it is not intended to be substituted for or used as medical advice. If you have any questions or concerns about your health, please speak to your doctor.
How long does Viagra last, and when does it start to work?
If you have any medical questions or concerns, please talk to your healthcare provider. The articles on Health Guide are underpinned by peer-reviewed research and information drawn from medical societies and governmental agencies. However, they are not a substitute for professional medical advice, diagnosis, or treatment.
Erectile dysfunction (ED)—when a person experiences trouble getting or maintaining an erection—can be stressful, and worrying about how long Viagra lasts will not help the situation. Typically, Viagra—a medication healthcare providers prescribe to treat ED—lasts for about 4–5 hours, but because erectile dysfunction is so common, affecting 30–50 million people in the US, this time frame is not one-size-fits-all. Several factors can come into play to determine both how long Viagra takes to work and how long it lasts (Sooriyamoorthy, 2022).
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How long does Viagra last?
It’s important to remember that you don’t need to have an erection for Viagra (see Important Safety Information) to work. Viagra’s active ingredient is sildenafil citrate, a PDE-5 inhibitor that relaxes muscles in the penis and improves blood flow to enable people with penises to have erections. It is neither required nor healthy to have an erection the entire time Viagra is in your system (Smith, 2022).
Viagra can stay active in your system for up to 4–5 hours, depending on other factors. Most healthcare providers suggest you take it 30–60 minutes before engaging in sexual activity, but you can take it up to four hours before intercourse. Some of the medicine may be in your body longer, but in concentrations too low to cause any effect (Zucchi, 2019; DailyMed, 2017).
Many different factors affect how long Viagra works for someone, including the dose of the medication, other medications or supplements you’re taking, your age, diet, overall health, and psychological state.
What factors affect how long Viagra lasts?
A few major factors can affect how long Viagra will last after you take it.
Dosage
The amount of Viagra you take affects the way it works with your system and how long it stays in your body. Taking a higher dose, such as the largest available 100 mg tablet, may result in a longer-lasting effect than ingesting a smaller dose (Smith, 2022). Note: Consult your physician to ensure you’re taking the safest amount of Viagra for you, depending on your personal health circumstances.
Age
The effects of Viagra tend to last longer for older men over 65. This is because age comes with a slower metabolism process (DailyMed, 2017). Hence, Viagra can remain in your system, staying active for longer. Typically, it can last up to four hours, with your liver taking more time to metabolize the drug.
Food and overall diet
Eating heavily right before Viagra intake can considerably slow down the absorption of the drug and, in turn, delay its desired effects. Fatty foods can decrease drug absorption and increase how long sildenafil takes to start working—meaning taking sildenafil on an empty stomach may allow it to work faster. While this does not mean that you should deprive yourself of meals, you should consider waiting at least an hour after eating before taking Viagra to allow it to have the fullest effect (Zucchi, 2019).
What causes erectile dysfunction (ED) in men over 50?
Alcohol
It is most advisable to refrain from consuming alcohol when you’re taking Viagra. If it can’t be avoided, it is best to veer from excessive drinking. Drinking alcoholic beverages while taking Viagra has not been shown to cause adverse effects. However, alcohol can negatively impact the male reproductive system as a whole (Emanuele, n.d).
Medications
Certain medications should not be taken alongside Viagra. Interactions between Viagra and other medicines may change the expected results from the former. In addition, this may also cause more serious health complications (DailyMed, 2017).
How long does Viagra take to work?
Viagra starts working in as little as 30 minutes after taking it. But it can take up to two hours to be effective if you take the drug with a big meal (Zucchi, 2019).
So, how does it work? A lot has to go right in your body for an erection to happen. Even if we ignore the mental and emotional aspects of arousal and how they can lower sex drive, an erection is a complicated physiological dance involving many systems of your body.
A messenger called cGMP tells erectile tissue to relax, which allows blood to flow into the penis. But at the same time, the blood vessels that take the blood back to your heart constrict so that more blood is trapped in the penis. An enzyme called phosphodiesterase-5 (PDE-5) breaks down cGMP so that the erect penis can relax (Smith, 2022).
That’s where Viagra comes in. Viagra is a PDE-5 inhibitor, which blocks this enzyme from breaking down the messenger that kick-starts the blood flow needed to get and maintain an erection (Smith, 2022). The medication doesn’t cause spontaneous erections on its own, though—it just makes them easier to form. You’ll still need to be sexually aroused to get an erection.
When to take Viagra and how to take it
Timing is essential when it comes to taking Viagra. The best time to take Viagra is about 30–60 minutes before sex for maximum effect. You can take Viagra with or without food, but know that high-fat mealsmay increase how long sildenafil takes to start working (Zucchi, 2019).
If you think it is not working after 30–60 minutes, do not take more medication. There is an association between higher doses and higher rates of side effects. Talk to your healthcare provider if you feel like your Viagra or sildenafil is not working for you.
How much Viagra should you take?
Viagra (or generic Viagra) tablets typically come in three doses: 25 mg, 50 mg, and 100 mg.
It’s most common for people to start with the 50 mg dosage. If you’re on a higher dose, the effects of Viagra may last longer. It may take more time for older people to eliminate Viagra from their bodies, meaning the medicine may last longer in their bodies. This may also be the case for people with medical conditions like liver or kidney disease (DailyMed, 2017).
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Before and after Viagra
Wondering what to expect after taking Viagra?
Well, it won’t take effect right away. Viagra will begin to work around one hour after taking it. It needs this time to absorb into your blood completely. This is when Viagra reaches its peak concentration in your bloodstream and, thus, its optimal effect.
The drug will cause the blood vessels in the penis to relax, allowing increased blood flow to the organ and leading it to expand for an easier and stronger erection for a longer time.
A myth about Viagra is that it forces an erection. In fact, it does not, on its own, cause the erection. It assists with getting a full erection with proper sexual stimulation. When you are no longer turned on or sexually aroused, the erection should stop as normal.
Four hours after Viagra intake, the drug, now metabolized in the system, will reach its half-life (i.e., your blood is rid of half of the medication). This does not necessarily mean the effects are completely eradicated. Some people find that Viagra is still effective 18 hours after taking it (DailyMed, 2017; Smith, 2022).
After 24 hours, most of the sildenafil will leave the bloodstream, and the effects of the Viagra should subside (Smith, 2022).
Viagra side effects
The most common side effects of Viagra include (Smith, 2022):
Priapism, a persistent and painful erection that can last more than four hours, is the most infamous potential side effect of Viagra—fortunately, it is not a common one. But priapism is a serious health condition that requires immediate medical attention. You should follow medical advice on your recommended dose of Viagra and not take more if it doesn’t work in 30 minutes (Smith, 2022).
Other serious side effects that are less common include (Smith, 2022):
- Hearing loss (which can be sudden)
- Irregular heartbeat
- Severe low blood pressure
- Blurred vision or vision loss, which can be in one or both eyes
Risk factors and warnings
Some medical conditions can interact negatively with Viagra. If you have any of the following, speak with your healthcare provider before taking Viagra.
Blood pressure issues
Viagra relaxes the muscles of your blood vessels to improve blood flow. However, this can also cause low blood pressure. If your blood pressure drops too low, you can develop hypotension and may experience fainting, dizziness, etc. You should not take Viagra if you already have low blood pressure, as Viagra may worsen the condition.
Similarly, if you have high blood pressure and use medications to lower it (antihypertensives), taking Viagra can cause your blood pressure to drop even further. This is especially true if you are taking an alpha-blocker antihypertensive, like terazosin. Alpha-blockers like tamsulosin (brand name Flomax) are also used to treat prostate issues and can have the same low blood pressure effect if taken with Viagra (DailyMed, 2017).
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Heart problems
People with heart conditions, such as a history of heart disease, heart failure, or those who’ve suffered recent chest pains or a heart attack, should check with their healthcare provider before taking Viagra (DailyMed, 2017).
Vision concerns
Viagra may increase your risk of vision loss due to non-arteritic ischemic optic neuropathy (NAION), essentially a small stroke of the optic nerve. If you have a history of or risk factors for NAION, you should use caution with Viagra. Viagra has also been reported to cause changes in color vision in some people (DailyMed, 2017).
Lastly, anyone with an allergy or hypersensitivity reaction to Viagra should not use the medication.
Drug interactions with Viagra
Before starting Viagra or sildenafil, be sure to tell your healthcare provider about any other prescription drugs you are taking to avoid potential drug interactions. Some drugs, in particular, include:
- Nitrates: Viagra is contraindicated if you are also taking nitrates (e.g., nitroglycerin) for chest pain. The combination of these two drugs can make your blood pressure drop to life-threateningly low levels. You need to wait at least 24 hours after taking Viagra before you can safely take nitrates (Smith, 2022).
- Ritonavir: Ritonavir affects the CYP3A4 enzyme in the liver—this is the system responsible for breaking down sildenafil. If taken with Viagra, ritonavir may raise Viagra concentrations in your blood and increase your risk of side effects like low blood pressure and prolonged erections (DailyMed, 2017).
- PDE-5 inhibitors: You should not combine sildenafil with other PDE-5 inhibitors (like Revatio for pulmonary arterial hypertension) or other erectile dysfunction treatments, to avoid the potential risk of a drop in blood pressure (DailyMed, 2017).
Alternatives to Viagra
Common alternatives to Viagra include Cialis (tadalafil; see Important Safety Information) and Levitra (vardenafil). If taking a pill before sexual activity doesn’t work for you, daily Cialis may be an option. Taken daily, this medication provides a low dose of tadalafil to be ready for sex anytime. Levitra acts similarly to Viagra and, like the blue pill, needs to be taken within a specific timeframe before sexual activity (Zucchi, 2019).
When to see a healthcare provider
In some cases, erectile dysfunction is due to underlying causes. Treating those conditions may help resolve the problem without ED medications. In other cases, performance anxiety may be the cause of erectile dysfunction. Addressing the mental and emotional aspects of sexual stimulation may also help. Your healthcare provider can help you navigate the different ED causes and the risks and benefits of various treatment options.
If you already take Viagra, seek medical advice from your healthcare provider if you feel that the medicine is not working for you.
Daily Viagra: how often can you take it?
Viagra FAQs
Many people have questions about Viagra before or after starting the medication. Here are answers to some common questions.
What is Viagra?
Viagra is a brand name for sildenafil. This medication is also used to help with erectile dysfunction (ED).
How long do you stay hard with Viagra?
With adequate sexual stimulation, Viagra can help a person stay hard for up to four hours.
How long does it take for Viagra to peak?
Viagra should begin to work within 30 minutes after a person takes it. However, it will reach its peak after 60 to 120 minutes.
How much Viagra should I take the first time?
The recommended starting dose of Viagra is 50 mg.
References
- DailyMed. (2017). Viagra – sildenafil citrate tablet, film-coated. Retrieved on Aug. 14, 2022 from https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=a2a9f459-e692-4e85-83b0-a35fbf35e91b
- Emanuele, M. A. & Emanuele, N. (n.d.). Alcohol and the male reproductive system. National Institute on Alcohol Abuse and Alcoholism. Retrieved on Aug. 14, 2022 from https://pubs.niaaa.nih.gov/publications/arh25-4/282-287.htm
- Smith, B. P. & Babos, M. (2022). Sildenafil. StatPearls. Retrieved on Aug. 14, 2022 from https://www.ncbi.nlm.nih.gov/books/NBK558978/
- Sooriyamoorthy, T. & Leslie, S. W. (2022). Erectile dysfunction. StatPearls. Retrieved on Aug. 14, 2022 from https://www.ncbi.nlm.nih.gov/books/NBK562253/
- Zucchi, A., Costantini, E., Scroppo, F. I., et al. (2019). The first-generation phosphodiesterase 5 inhibitors and their pharmacokinetic issue. Andrology, 7(6), 804–817. doi:10.1111/andr.12683. Retrieved from https://pubmed.ncbi.nlm.nih.gov/31350821/
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Important Safety Information for Sildenafil (Viagra)
What are the most important things I need to know about VIAGRA® (sildenafil citrate) 25 mg, 50 mg, and 100 mg tablets and generic VIAGRA®?
Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate emergency medical attention.
- VIAGRA® and generic VIAGRA® can cause serious side effects. Serious, but rare, side effects include:
- an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, seek emergency medical attention right away. If it is not treated right away, priapism can permanently damage your penis.
- sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking VIAGRA and call your healthcare provider right away if you have any sudden vision loss
- sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking VIAGRA and contact a doctor right away
Who should not take VIAGRA® or generic VIAGRA®?
Do not take VIAGRA® or generic VIAGRA® if you:
- Take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level
- Are allergic to sildenafil, as contained in VIAGRA® and REVATIO®, or any of the ingredients in VIAGRA® or generic VIAGRA® tablets.
- Are a women or a child
When should I call my primary provider?
Call your primary provider right away if you:
- Have an erection that lasts longer than 4 hours
- Experience a sudden loss of vision in one or both eyes
- Experience a sudden decrease in or loss of hearing
- Experience chest pain, dizziness, or nausea during sex
- Take too much Viagra or sildenafil citrate
If you are experiencing a medical emergency, call 911 or seek immediate medical attention.
What are the most common side effects of VIAGRA® and generic VIAGRA®?
- headache
- flushing
- upset stomach
- abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision
- stuffy or runny nose
- back pain
- muscle pain
- nausea
- dizziness
- rash
What should I tell my Roman-affiliated provider before taking VIAGRA® and generic VIAGRA®?
Before you take VIAGRA® or generic VIAGRA® , tell your healthcare provider if you:
- Have or have had heart problems such as a heart attack,irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure
- Have had heart surgery within the last 6 months
- Have pulmonary hypertension
- Have had a stroke
- Have low blood pressure, or high blood pressure that is not controlled
- Have a deformed penis shape
- Have had an erection that lasted for more than 4 hours
- Have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia
- Have retinitis pigmentosa, a rare genetic (runs in families) eye disease
- Have ever had severe vision loss, including an eye problem called NAION
- Have bleeding problems
- Have or have had stomach or intestinal ulcers
- Have liver problems
- Have kidney problems or are having kidney dialysis
- Have any other medical conditions
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
VIAGRA may affect the way other medicines work, and other medicines may affect the way VIAGRA works, causing side effects.
Especially tell your healthcare provider if you take any of the following:
- Medicines called nitrates
- Medicines called guanylate cyclase stimulators such as Adempas® (riociguat)
- Medicines called alpha-blockers such as Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl), Uroxatral® (alfuzosin HCl), Jalyn® (dutasteride and tamsulosin HCl), or Rapaflo® (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of VIAGRA® with alpha-blockers can lead to a drop in blood pressure or to fainting
- Medicines called HIV protease inhibitors, such as ritonavir (Norvir®), indinavir sulfate (Crixivan®), saquinavir (Fortovase® or Invirase®), or atazanavir sulfate (Reyataz®)
- Oral antifungal medicines, such as ketoconazole (Nizoral®) and itraconazole (Sporanox®)
- Antibiotics, such as clarithromycin (Biaxin®), telithromycin (Ketek®), or erythromycin
- Other medicines that treat high blood pressure
- Other medicines or treatments for ED
- VIAGRA® contains sildenafil, which is the same medicine found in another drug called REVATIO®. REVATIO® is used to treat a rare disease called pulmonary arterial hypertension (PAH). VIAGRA® should not be used with REVATIO® or with other PAH treatments containing sildenafil or any other PDE5 inhibitors (such as Adcirca [tadalafil])
Withholding or providing inaccurate information about your health and medical history in order to obtain treatment may result in harm, including, in some cases, death.
What is the FDA-approved use of VIAGRA® and generic VIAGRA®?
VIAGRA® (sildenafil citrate) is prescription medicine used to treat erectile dysfunction (ED).
Roman-affiliated doctors may prescribe VIAGRA® or generic VIAGRA® for the treatment of premature ejaculation (PE), if they believe in their medical judgment that it is an appropriate course of treatment. While this is not an FDA-approved use of the drug, the American Urological Association has included the use of sildenafil citrate in the treatment of PE in its Guideline on the Pharmacologic Management of Premature Ejaculation.
You are encouraged to report negative side effects of prescription products to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.
Please see the full Prescribing Information for complete safety information.
Product names referenced herein are trademarks of their respective owners.
Important Safety Information for Tadalafil (Cialis)
What Is The Most Important Information I Should Know About CIALIS® (tadalafil) and generic CIALIS®?
- CIALIS® and generic CIALIS® can cause serious side effects. Serious, but rare, side effects include:
- An erection that won’t go away (priapism). If you get an erection that lasts more than 4 hours, get medical help right away. Priapism must be treated as soon as possible or lasting damage can happen to your penis, including the inability to have erections.
- Changes in vision. Color vision changes, such as seeing a blue tinge (shade) to objects or having difficulty telling the difference between the colors blue and green.
- Sudden decrease or loss of vision. In rare instances, men taking PDE5 inhibitors (oral erectile dysfunction medicines, including CIALIS® and generic CIALIS®) reported a sudden decrease or loss of vision in one or both eyes. It is uncertain whether PDE5 inhibitors directly cause the vision loss. If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including CIALIS® and generic CIALIS®, and call a healthcare provider right away.
- Sudden loss or decrease in hearing. Sudden loss or decrease in hearing, sometimes with ringing in the ears and dizziness, has been rarely reported in people taking PDE5 inhibitors, including CIALIS® and generic CIALIS®. It is not possible to determine whether these events are related directly to the PDE5 inhibitors, to other diseases or medications, to other factors, or to a combination of factors. If you experience these symptoms, stop taking CIALIS® and generic CIALIS® and contact a healthcare provider right away.
- ED is a condition where the penis does not fill with enough blood to harden and expand when a man is sexually excited, or when he cannot keep an erection. A man who has trouble getting or keeping an erection should see his healthcare provider for help if the condition bothers him.
- CIALIS® and generic CIALIS® help increase blood flow to the penis and may help men with ED get and keep an erection satisfactory for sexual activity. Once a man has completed sexual activity, blood flow to his penis decreases, and his erection goes away. Some form of sexual stimulation is needed for an erection to happen with CIALIS® or generic CIALIS®.
- CIALIS® and generic CIALIS® do not:
- Cure ED
- Increase a man’s sexual desire
- Protect a man or his partner from sexually transmitted diseases, including HIV. Speak to your healthcare provider about ways to guard against sexually transmitted diseases.
- Serve as a male form of birth control
- Take CIALIS® or generic CIALIS® exactly as your healthcare provider prescribes it. Your healthcare provider will prescribe the dose that is right for you. Do not change your dose or the way you take CIALIS® or generic CIALIS® without talking to your healthcare provider.
Who Should Not Take CIALIS® or generic CIALIS®?
Do not take CIALIS® or generic CIALIS® if you:
- Have severe liver disease. Tell your doctor if you have mild to moderate liver disease as you may need dosage reductions.
- Have severe kidney disease. Tell your doctor if you have mild to moderate kidney disease as you may need dosage reductions
- Take any medicines called “nitrates”
- Use recreational drugs called “poppers” like amyl nitrite and butyl nitrite
- Take any medicines called guanylate cyclase stimulators, such as riociguat
- Are allergic to CIALIS®, tadalafil or ADCIRCA®, or any of its ingredients
When should I call my primary provider?
Call your primary provider right away if you:
- Have an erection that lasts longer than 4 hours
- Experience a sudden loss of vision in one or both of your eyes
- Experience a sudden decrease or loss hearing
- Take too much CIALIS® or generic CIALIS®
- Have an allergic reaction to CIALIS® or generic CIALIS®
- Symptoms of an allergic reaction may include:
- Rash
- Hives
- Swelling of the lips, tongue, or throat
- Difficulty breathing or swallowing
Call your healthcare provider or get help right away if you have any of the symptoms of an allergic reaction listed above.
If you are experiencing a medical emergency, call 911 or seek immediate medical attention.
What Should I Tell My Roman-affiliated Provider Before Taking CIALIS® and generic CIALIS®?
Tell your Roman-affiliated provider about all your medical problems, including if you:
- Have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Ask your healthcare provider if it is safe for you to have sexual activity. You should not take CIALIS® and generic CIALIS® if your healthcare provider has told you not to have sexual activity because of your health problems.
- Have pulmonary hypertension
- Have low blood pressure or have high blood pressure that is not controlled
- Have had a stroke
- Have liver problems
- Have kidney problems or require dialysis
- Have retinitis pigmentosa, a rare genetic (runs in families) eye disease
- Have ever had severe vision loss, including a condition called NAION
- Have stomach or intestinal ulcers
- Have a bleeding problem
- Have a deformed penis shape or Peyronie’s disease
- Have had an erection that lasted more than 4 hours
- Have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia
Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements.
Especially tell your healthcare provider if you take any of the following:
- Medicines called nitrates
- Medicines called guanylate cyclase stimulators, such as riociguat (Adempas®), used to treat pulmonary hypertension
- Medicines called alpha blockers. These include Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl), Uroxatral® (alfuzosin HCl), 4 Jalyn® (dutasteride and tamsulosin HCl) or Rapaflo® (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. If CIALIS® or generic CIALIS® is taken with certain alpha blockers, your blood pressure could suddenly drop. You could get dizzy or faint.
- Other medicines to treat high blood pressure (hypertension)
- Medicines called HIV protease inhibitors, such as ritonavir (Norvir® , Kaletra® )
- Oral antifungals such as ketoconazole (Nizoral® ), itraconazole (Sporanox® )
- Antibiotics such as clarithromycin (Biaxin® ), telithromycin (Ketek® ), erythromycin (several brand names exist. Please consult your healthcare provider to determine if you are taking this medicine).
- Other medicines or treatments for ED.
- Tadalafil is also marketed as ADCIRCA® for the treatment of pulmonary arterial hypertension. Do not take both CIALIS® or generic CIALIS® and ADCIRCA®. Do not take sildenafil citrate (Revatio®, Viagra®) with CIALIS® or generic CIALIS®.
Withholding or providing inaccurate information about your health and medical history in order to obtain treatment may result in harm, including, in some cases, death.
What are the most common side effects of CIALIS® or generic CIALIS®?
The most common side effects with CIALIS® and generic CIALIS® are:
What is the FDA-approved Use of CIALIS® and generic CIALIS®?
CIALIS® and generic CIALIS® are prescription medicines used to treat erectile dysfunction (ED), symptoms of benign prostatic hyperplasia (BPH), or both.
Roman-affiliated doctors may prescribe CIALIS® for the treatment of premature ejaculation (PE), if they believe in their medical judgment that it is an appropriate course of treatment.
You are encouraged to report negative side effects of prescription products to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.
Please see the full Prescribing Information for complete safety information.
How long Viagra lasts
Viagra is a drug that helps treat erectile dysfunction. It improves blood flow to the penis, and its effects can last for up to 4 hours.
Erectile dysfunction is a common condition that can affect males of any age. Males with this condition are unable to reach or maintain an erection to engage in sexual activity.
A lack of blood flow is one cause of erectile dysfunction. Viagra can help stimulate blood flow to the penis and help people with the condition maintain an erection.
This article discusses how long Viagra lasts, what it is for, and alternative methods of treating erectile dysfunction.
When a person takes it orally, the body rapidly absorbs Viagra.
The concentration of Viagra in the blood peaks around 30–120 minutes after taking the drug — usually around the 60 minute mark.
It is possible to start feeling the effects of Viagra at any time during this window.
Viagra tablets typically come in 25, 50, or 100 milligram (mg) doses. One older study shows that the risk of side effects does not increase when going from 50 to 100 mg doses of Viagra. However, taking a higher dose will increase the effectiveness.
The effects of Viagra vary for each individual. The effects of taking 100 mg of Viagra can last for up to 4 hours after taking the drug. However, the strength of these effects is weaker at 4 hours than 2 hours after taking Viagra.
As the concentration of Viagra in the blood typically peaks 60 minutes after taking the drug, the effects are strongest around this time. Therefore, it is best to take Viagra around 1 hour before any sexual activity.
It is possible to take Viagra with or without eating. However, eating a high fat meal before taking Viagra can delay absorption, meaning that the drug may take longer to work.
Viagra helps with erectile dysfunction by making it easier for a male to get and maintain an erection. Erectile dysfunction is a common condition that affects an estimated 30 million males in the United States.
People with erectile dysfunction find it difficult reach or maintain an erection , even during sexual arousal. The condition can have a variety of causes, but it usually relates to poor blood flow to the penis.
During arousal, the arteries leading to the penis expand, allowing more blood to flow through it. The veins leading blood away from the penis also become narrower. The greater blood flow in and restricted blood flow out of the penis cause it to harden, leading to erection.
In erectile dysfunction, however, blood flow to the penis can be too low and disrupt the ability to get or maintain an erection. Drugs such as Viagra relax smooth muscles and increase blood flow to the penis, making it easier to get or keep an erection.
Viagra can only work during sexual arousal. If a person is not in a state of arousal, Viagra will not be able to cause an erection.
There are many other ways to treat erectile dysfunction.
Viagra is a phosphodiesterase (PDE) 5 inhibitor. There are several other PDE 5 inhibitors that are also helpful for treating erectile dysfunction, such as Stendra.
Several other drugs have a similar effect to Viagra, such as Cialis or Levitra.
It can also help to make changes to areas of lifestyle that could be contributing to erectile dysfunction. These changes include :
- becoming more physically active
- giving up smoking
- losing weight or maintaining a healthy weight
- reducing alcohol consumption
- changing medications that can cause erectile dysfunction
In some cases, erectile dysfunction does not have a physical cause. For example, it may occur as a result of stress or an underlying mental health condition, such as depression. If the cause is psychological, psychotherapy or counseling can help treat it.
There are also a large variety of complementary and herbal medicines that claim to treat erectile dysfunction, such as herbal supplements. However, there is currently no reliable evidence to suggest that any of these approaches are effective for treating the condition.
There are also safety concerns surrounding herbal remedies and supplements. The Food and Drug Administration (FDA) do not approve their use for this purpose.
Share on Pinterest If a person experiences consistent erectile dysfunction, they should speak to their doctor.
It is important to see a doctor following consistent signs of erectile dysfunction.
A doctor can provide guidance on the best course of action and how to reduce the risk of any adverse side effects with treatment.
Erectile dysfunction is a sensitive issue, and it can be difficult to seek professional help. The condition can have a significant impact on well-being. However, a wide variety of effective methods for treating the condition are available.
Viagra is a useful form of treatment for erectile dysfunction.
It is best to take the drug around 60 minutes before sexual activity, and its effects can last up to 4 hours. Viagra cannot cause an erection if there is a lack of sexual arousal.
There are several other methods for dealing with erectile dysfunction, including taking other medications, making lifestyle changes, and seeking therapy or counseling.
It is important to seek help from a healthcare professional rather than trying to treat the condition alone.
Last medically reviewed on August 13, 2019
How we reviewed this article:
Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. We avoid using tertiary references. We link primary sources — including studies, scientific references, and statistics — within each article and also list them in the resources section at the bottom of our articles. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
- Buvat, J., et al. (2008). Efficacy, tolerability and satisfaction with sildenafil citrate 100‐mg titration compared with continued 50‐mg dose treatment in men with erectile dysfunction.
https://onlinelibrary.wiley.com/doi/full/10.1111/j.1464-410X.2008.07908.x - Definition & facts for erectile dysfunction. (2017).
https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction/definition-facts - Erectile dysfunction (ED). (n.d.).
https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction - Erectile dysfunction/sexual enhancement. (2019).
https://nccih.nih.gov/health/sex/erectiledysfunction.htm - Katz, E. G., et al. (2014). Avanafil for erectile dysfunction in elderly and younger adults: differential pharmacology and clinical utility.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155803/ - Label: Viagra- sildenafil citrate tablet, film coated. (2017).
https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=0b0be196-0c62-461c-94f4-9a35339b4501 - Sildenafil. (2018).
https://medlineplus.gov/druginfo/meds/a699015.html - Treatment for erectile dysfunction. (2017).
https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction/treatment
How Long Does Viagra Last?
Viagra usually lasts around 4 to 6 hours, but It might last for a longer or shorter time depending on the person taking it. The only way to know exactly how long it will last for you is to try it and see for yourself.
There are a few things you can do to make sure Viagra lasts as long as possible for you, or there are alternatives that last longer too.
Find out how long Viagra can be made to last, which treatments stretch further, and how to last longer after ejaculating.
Contents
How long does Viagra last for?
Viagra can improve erections for up to 4 to 6 hours after it’s taken
- Levels of Viagra are highest in your body 30 to 120 minutes after you take a dose
- Viagra lasts a maximum of 12 hours, but it won’t last this long for everyone
- After 3 to 5 hours there is only half of maximum amount of Viagra left in your body
How long do erections last on Viagra?
This table shows how long erections last for men with erectile dysfunction after taking Viagra.
Viagra makes it easier for you to get and keep erections. It doesn’t give you an erection that lasts 4 to 6 hours. If you have a painful erection that lasts more than 2 hours you need emergency medical help.
The duration varies from person to person
Viagra won’t stop you losing your erection if you orgasm. Most people lose erections after they orgasm and then there will be a period of time where they won’t be able to get hard again (the refractory period). This is absolutely normal. After this rest period – which varies from person to person, you should find that you can get an erection again if aroused and if within the time the Viagra is still working.
Some studies show the effects of viagra can last for up to 12 hours or more. But, this won’t be the case for most people. Normally, the effects of the medication start wearing off 2 to 3 hours after first taking it. If you want to find out how long it lasts before you plan to use it for sex, you could try it by yourself first.
Does Viagra help you last longer in bed?
Viagra can only help you last longer in bed if you are losing erections before you orgasm. If you’re orgasming quicker than you want to during sex, you may be able to get premature ejaculation treatment.
What helps Viagra last longer?
What you can do to make sure Viagra lasts as long as possible:
- Eat a healthy, balanced diet:
- Include more whole grains, fruit and vegetables in your diet
- Reduce the amount of saturated fat you are eating
- Reduce the number of takeaways you eat
- Reduce your salt intake – 6g per day is the maximum
- Avoid grapefruit juice when you take Viagra as it can stop it from working
- Cut down on your alcohol intake:
- You should avoid alcohol when you take Viagra as it can reduce how effective it is
- If you do drink, keep it below 2 units of alcohol
- Quit smoking:
- Improves heart health, which means better blood flow to the penis
- Exercise:
- Reduces stress levels, which can make you more relaxed during sex
- Improves heart health, which means better blood flow to the penis
What factors effect how long Viagra lasts?
- Your age:
- If you’re over 65, your body gets less effective at removing Viagra from your body, meaning the effects can last longer
- Alcohol:
- Alcohol decreases the blood flow to your penis making it harder to get an erection, which makes it harder for Viagra to work
- Alcohol also causes the nerves that control an erection to have a slower response, which can become permanent with chronic alcohol abuse.
- Drinking more than 2 units of alcohol while taking Viagra can increase the chance of negative side effects and make you unable to get and keep an erection
- Diet:
- A large meal that is high in fat can affect the way Viagra works, making it less effective and take longer to work
- Taking the medication on an empty stomach means it will get to work much quicker
- Other drugs:
- Some antibiotics can increase the amount of Viagra in your system which can make it last longer and increase the chance of side effects
- You should speak to your GP to check if you are at risk of any drug interactions
- Dosage:
- Usually higher doses are more effective and tend to last longer
- Your GP will prescribe the right Viagra dosage to you
- Health:
- Your overall health and fitness will affect Viagra’s working time
- Liver and kidney problems can cause Viagra to stay in your system for longer.
- Since Viagra can be unsafe for some people, make sure you tell your doctor about all health conditions you have when you order Viagra.
Can you take more Viagra to make it last longer?
No, you can only safely take Viagra once every 24 hours. Even though the effects of Viagra won’t last longer than 12 hours, it takes 24 hours to make sure it’s safely out of your system.
Taking more than one Viagra in the same 24 hour period could mean the amount of Viagra in your body builds up to unsafe levels. Having unsafe levels of Viagra in your body increases your risk of side effects, including those that are more serious.
You also can’t take Viagra with other erectile dysfunction tablets for the same reasons.
View Erectile Dysfunction Treatments
View Erectile Dysfunction Treatments
Which strength lasts the longest?
Higher doses of Viagra last slightly longer. There are 3 doses, 25mg, 50mg, and 100mg. The highest dose available is 100mg, which lasts the longest. We recommend most people try 50mg of Viagra if they haven’t used it before. 50mg works for most men and has a lower risk of side effects than 100mg.
The risk of side effects goes up with dosage, and side effects may last longer and be more intense with higher, longer-lasting doses.
Higher doses also take slightly longer to reach their maximum level inside the body, so they take slightly longer to work than lower doses.
How long does Viagra takes to work?
For most people, Viagra takes 30 to 60 mins to start working. For some men, Viagra can start working as fast as 12 minutes after it’s taken. Still, to give it enough time to start working, it’s recommended you take Viagra a full hour before you want to try and have sex.
Viagra can take longer to work if you eat a heavy meal before you take it. Food can push back the time Viagra starts working to 2 hours after you take it, instead of 30 to 60 mins.
If you want a medication that works faster than Viagra, or you don’t want to wait or plan before sex, you could try Spedra or Cialis Daily;
- Spedra gets to work in 15 mins on average, making it the fastest working erectile dysfunction tablet
- Cialis Daily is taken every day so it is always in effect, meaning it’s always easier for you to get and keep erections
Does Sildenafil or Viagra Connect last longer than Viagra?
Viagra, generic Sildenafil, and Viagra Connect all have the same active ingredient, sildenafil citrate. This means they all work the same way and last the same amount of time.
Since Viagra Connect is only available in the 50mg dose and higher doses last longer, Viagra and Sildenafil can last longer if you use the 100mg dose.
Do other tablets last longer than Viagra?
Yes, Cialis and Cialis Daily can both last longer than Viagra. Cialis has been shown to last up to 36 hours, compared to Viagra which lasts 4 to 6 hours. That’s why Cialis is sometimes called the weekend pill. Cialis can be a better choice if you want to have a bigger window of opportunity for having sex after taking your medication.
Cialis Daily is taken once a day and once it starts working, it’s always in effect. This means you could always have an easier time getting and keeping erections, and you don’t need to plan sex in advance.
Sources
Cialis Daily (2017) Medicines compendium [accessed 31 March 2020]
