Sildenafil
Sildenafil (generic Viagra) tablets to treat erectile dysfunction available to buy online from our registered UK pharmacy.
Buy Sildenafil online in UK
How to order Sildenafil online for UK delivery:
- Read medical information about erectile dysfunction
- Answer medical questions to check for eligibility
- Reviewed by doctors – medication posted from UK pharmacy (tracked 24hr service)
Men should have an erectile dysfunction diagnosis from a GP before obtaining medication online.
Generic Viagra
Sildenafil is the medical or generic name for Viagra. Medically they are the same. Sildenafil is sometimes called generic Viagra. Sildenafil was first marketed under the name Viagra in 1998. In June 2013, when the patent of Viagra expired in the UK and other European countries, prices came down significantly.
Generic sildenafil is available at much lower cost, from 71p per tablet, while Pfizer branded Viagra costs over £5 per tablet.
Prices
| Tablet type | 4 tablets | 8 tablets | 16 tablets | 32 tablets | 64 tablets |
|---|---|---|---|---|---|
| Sildenafil 25mg | £4.90 | £8.50 | £15.20 | £29.50 | £45.50 |
| Sildenafil 50mg | £6.50 | £11.90 | £23.00 | £44.00 | £60.95 |
| Sildenafil 100mg | £7.20 | £13.25 | £26.00 | £49.00 | |
| Viagra 25mg | £24.20 | £44.30 | £82.00 | ||
| Viagra 50mg | £29.40 | £59.50 | £112.60 | n/a | n/a |
| Viagra 100mg | £33.80 | £64.45 | £124.50 |
Price match guarantee
Prescription issued online – small prescription fee per order.
Prescription fees
Prescriptions are issued by our doctors online and sent electronically to our pharmacy.
| Order value | Prescription fee |
|---|---|
| up to £10 | £1.00 |
| up to £20 | £2.00 |
| up to £40 | £3.00 |
| over £40 | £4.00 |
If you have your own private paper prescription please post to our pharmacy (details).
- The prices shown are listed by the online clinics named after a customer first enters consultation information and is offered prescriptions. It is possible these clinics may have special offers or lower prices for repeat supplies.
- Prices may change and are, to the best of our knowledge, accurate on the date stated. All products in stock and new condition.
- Dr Fox does NOT claim to provide a superior service to any of the online clinics listed. All the clinics listed, as far as we can tell, comply with all regulation and, as far as we can tell, operate to high ethical standards.
- Dr Fox adds a small prescription fee not included in the table (between £1 and £4 depending on value of the order).
- To amend the information in this table please contact us
- The prices listed in the table do not identify the cost of prescription medicine as online clinics charge a single fee to cover services which includes advice, consultations, prescriptions, and dispensing and supply of treatments.
- Where services include free delivery this is using the slowest delivery option available. Dr Fox uses Royal Mail Tracked 24.
Delivery charges
UK delivery only: £2.90 per consultation via Royal Mail 24 Signed For (1-3 working days with tracking).
Parcel forwarding services are not permitted. Use only UK home or work delivery address.
Returns and refunds – unwanted items can be returned within 14 working days for a full refund.
About Sildenafil
How does sildenafil work?
During sexual arousal blood flow in the penis changes. It is this change in blood flow which produces erections. Sildenafil is known medically as a PDE5 inhibitor. PDE5 inhibitors alter the levels of the natural chemical messengers involved in producing erections.
Why choose sildenafil?
Sildenafil is a tried and tested medicine. Most men find it an effective treatment and are not usually troubled by significant side effects. It usually starts to work within 30 minutes of taking a tablet, and usually remains active for about 4 hours. Erections will only occur during this time if there is stimulation. If there is no arousal, there will be no erection. After 4 hours the effects of the tablet wear off.
Alternative tablets include Cialis (tadalafil), Levitra (vardenafil), and Spedra (avanafil). They work in the same way, but for different lengths of time. See tablet differences for further details.
How to take sildenafil
The normal starting dose, in men who have not taken sildenafil before, is one 50mg tablet. Subsequent doses can be adjusted up to a maximum of 100mg as a single dose, or down to 25mg, depending on response. Most men find 50mg sufficient. Sildenafil should not be taken more than once in 24 hours.
The effects of treatment may not be exactly the same each time. It is best to take the same dose that worked previously, increasing the dose only if on several occasions treatment is not successful.
Sildenafil dosage
Sildenafil 25mg
Reduced dose recommended when 50mg starting dose is highly effective.
Sildenafil 50mg
Starting dose usually recommended for most men taking sildenafil for the first time.
Sildenafil 100mg
High strength dose for when 50mg is ineffective.
Contraindications and interactions
All men with erectile dysfunction should consult a doctor face-to-face before buying sildenafil tablets online. Sildenafil is not suitable for all men, particularly men who have severe heart disease or a history of stroke. Some prescribed medicines interact with sildenafil, most notably medicines called nitrates, used to treat angina and heart disease.
Checks on the suitability of treatment are carried out during our online consultation. Men who are not eligible to order from Dr Fox should consult with their doctors.
Men should not take sildenafil without further assessment from their GP when the following apply:
- Low or high blood pressure
- Allergies or reactions to past ED treatments
- Recent heart attack (within 6 weeks) or suffer from angina (heart pain on exertion) or any form of heart disease
- History of strokes or mini-strokes (transient ischaemic attack)
- History of vision problems caused by circulation problems
- History in the family of rare degenerative eye disease
- Serious kidney (renal) or liver disease
- Peyronie’s disease – angulation or deformity of the penis
- Leukaemia, multiple myeloma or sickle cell disease
- Bleeding disorders (such as haemophilia)
- Current active stomach ulcers (peptic ulcer or gastric ulcer)
There is a very rare theoretical risk of abnormal heart rhythm if sildenafil is taken at the same time as some other medications – please check this list.
Side effects of sildenafil
Most men find sildenafil effective and do not experience significant side effects.
The commonest side effects, affecting up to 1 in 10 men are, nausea, facial flushing, hot flush (symptoms include a sudden feeling of heat in the upper body), indigestion, colour tinge to vision, blurred vision, visual disturbance, stuffy nose and dizziness.
A complete list of side effects can be found in the manufacturer’s patient information leaflet.
Allergic type reactions, chest pains or fits, all of which are very rare, require immediate medical attention. Prolonged (2 hours or more) painful erections, a medical condition called priapism, can occur and requires immediate medical attention.
What causes erectile dysfunction (ED )?
Alternative ED treatments
There are alternative non-tablet treatments, including Vitaros cream, and various other locally applied treatments. Some men benefit from counselling, particularly if stress and performance anxiety are present. A GP should be able to advise.
Drug misuse
Most men take sildenafil to support their usual sexual activity, with resulting benefits to their relationships. Men often find their lives transformed.
If sildenafil is taken in combination with recreational drugs, particularly cocaine, there is an increased risk of adverse effects, particularly prolonged painful erections, which can lead to permanent damage to the penis (priapism).
Patient Information Leaflet
Manufacturers and brands of sildenafil
Generic brands supplied may change from time to time as manufacturers may have stock shortages, and brand switching is often unavoidable. Most men find no difference between brands. Patients with a preference can request specific brands when ordering.
Sildenafil FAQs
The effects lasted longer than 4 hours – how?
Sildenafil will remain in the blood for longer than 4 hours but usually at concentrations too low to be effective (see graph below). If effects last longer than 4 hours it is usually because the dosage taken is higher than required, with the drug remaining effective in the blood for longer. Taking sildenafil shortly after eating a meal, particularly a meal high in fat, can delay the effects. It is advised to use the lowest effective dose which will reduce possible side effects.
Why must I see a doctor before starting sildenafil?
Is it safe to obtain sildenafil online?
Before ordering sildenafil online men must first read medical information about erectile dysfunction and answer medical questions to check for eligibility. Our doctors will then review your information before prescribing, and are available to answer any questions you may have.
Studies suggest that men are capable of using written sildenafil patient education materials to accurately assess their suitability for treatment with 50mg sildenafil.
What is the difference between sildenafil and Viagra?
Medically they are the same. Viagra is Pfizer’s brand name for sildenafil. Sildenafil is the medical name for the active ingredient in both. Sildenafil and Viagra both come in packs of 4 and 8 tablets in strengths of 25mg, 50mg, and 100mg. They are interchangeable.
Is Viagra stronger than sildenafil?
No, they are medically identical. They are equally effective and have the same side effects and other features.
What is the difference between sildenafil and Levitra and Cialis?
Why is sildenafil cheaper than Viagra?
Sildenafil is relatively cheap to produce and is supplied by a number of competing drug companies. This lowers prices. Viagra, which is simply Pfizer’s brand of sildenafil, is supplied by Pfizer alone. Pfizer have chosen to keep the price of Viagra higher and can still find a market as some men are loyal to the Viagra brand.
Why are there so many different brands of sildenafil?
Sildenafil is a medicine for which the patent has expired. This means the pharmaceutical company which developed it, Pfizer, cannot prevent other companies producing it. There is a big demand, and about a dozen pharmaceutical companies produce and market their own sildenafil. The following are UK licensed brands: Sandoz, Mylan, Accord, Actavis, Ajanta, Pfizer, Teva, Torrent, Dr Reddys, Bristol Labs, Zentiva. Only buy from registered pharmacies to guarantee tablets meet standards.
Which is the best brand of sildenafil?
Can I buy sildenafil without a prescription?
Can I get sildenafil on the NHS ?
Can sildenafil tablets be divided?
Some brands of sildenafil tablets are scored to enable them to be cut or broken in two easily. Other brands are un-scored and can be difficult to split without shattering.
Can I drink alcohol with sildenafil?
It is best not to drink alcohol when taking sildenafil or to drink only a small amount (one or two units). Alcohol is a depressant and tends to reduce erections and will reduce the effectiveness of treatment. Some side effects of sildenafil are likely to increase with alcohol, particularly low blood pressure.
What should I do if sildenafil does not work or stops working?
Sildenafil is usually effective and usually remains effective at the same dose over many years. The body does not get used to sildenafil or become immune to its effects. If there is a poor response from time to time, this is to be expected, as the circumstance around taking the tablets may not be right every time. If this happens, you should try again with the same strength tablets and can expect the same good responses as you had previously. If your usual sildenafil repeatedly fails to help, you should consult your regular doctor to see if there has been a change in the underlying cause of your ED or to see if another type of treatment might be more suitable. See My ED medicine is not working page.
Can I take sildenafil, Levitra, or Cialis at the same time?
Can I take sildenafil with other prescription medicines?
Sildenafil can be taken with most other prescription medicines, with some notable exceptions. Nitrates used mainly to treat heart disease and angina can interact and cause a dangerous fall in blood pressure. For a full list of interacting medicines check the patient information leaflet supplied with the tablets. Checks for interactions are carried out in online consolations.
Reviewed by Dr C. Pugh, Dr B. Babor, Dr A. Wood, Dr P. Hunt
Last reviewed 4 January 2022
Last updated 3 August 2022
References
- Accord Healthcare, 2021, Sildenafil: Summary of Product Characteristics, accessed 18 August 2021 , accessed 18 August 2021
- Goldstein, Tseng, Creanga, Stecher, Kaminetsky, 2016, The Journal of Sexual Medicine: Efficacy and Safety of Sildenafil by Age in Men With Erectile Dysfunction, accessed 18 August 2021
Product reviews
Sildenafil rated 4.59/5 in 6150 product reviews
Really helped me go for longer, no complaints from her either ;P
17/08/2022 10:42
Anonymous Verified
16/08/2022 19:35
J. Harrison Verified
Quality product quality service! Many thanks!
16/08/2022 14:58
Anonymous Verified
Not really good
15/08/2022 23:47
Anonymous Verified
Value for money and they work
15/08/2022 20:36
G. Cox Verified
The order process
Choose medication, register, and pay
Pharmacy team post medication direct
Supplementary information
Fully UK regulated
- Regulated by the Care Quality Commission
- Managed by GP s working in the NHS
- UK Pharmacy
Independent reviews
Rated 4.9/5.00 in 4897 reviews.
UK delivery £2.90
Tracking updates, signature required on receipt
Online prescriptions
Our doctors review all orders and issue new or repeat prescriptions online direct to our pharmacy.
