The generic form of Viagra - but much cheaper.

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A medical questionnaire and online prescription is required in order to purchase this medication.

Bringing you the cheapest Sildenafil in the UK

See how our prices compare

Pharmacy Guaranteed Next Day Delivery* Sildenafil per tablet including delivery
4 pack 8 pack 16 pack 32 pack 64 pack
WebMed FREE £4.63 £3.75 £3.13 £2.34 £1.98
Med Express (50mg) £5.95 £6.48 £4.49 £3.50 £3.00 £2.28
Med Express (100mg) £5.95 £6.49 £5.12 £4.12 £3.31 £2.59
Express £5.95 £6.48 £4.49 £3.50 N / A N / A
Lloyds (50mg) £4.95 £4.99 £4.12 £3.56 N / A N / A
Lloyds (100mg) £4.95 £7.49 £4.99 £4.06 N / A N / A
Superdrug £3.99 £5.00 £3.87 £3.06 N / A N / A
Pill Doctor N / A £6.25 £4.37 £3.44 £2.97 £2.26

Extra advantages of ordering with Webmed

Delivery in a 1-hour time slot

No waiting in all day!

Track your driver in real time

All the way to a 15 minute window

Can't stay home and wait?

Divert to a local Pickup Store

* Excludes the Highlands & Islands and Northern Ireland where we use Royal Mail Special Delivery which means in most cases it will be delivered by 1pm the next day.

Prices checked July 2018

How does Sildenafil work?

Erections are primarily achieved through blood flow. Sildenafil (the generic name for Viagra) works by helping to relax the blood vessels in your penis, allowing blood to flow into your penis when you get sexually excited. Sildenafil does not have an effect on your sexual desire but will improve your erection when you become sexually aroused.

How do I take Sildenafil?

Take Sildenafil about one hour before you plan to have sex. It will begin to have an effect in about 30 minutes and for up to 4 hours, Sildenafil can help you get an erection if you are sexually excited. Sildenafil works best when taken on an empty stomach. Sildenafil can help you get an erection when you are sexually excited but you will not get an erection just by taking it alone.Also, you are advised not to drink excessive amounts of alcohol before taking Sildenafil in order to get maximum benefit from taking your medication as drinking alcohol can temporarily affect your ability to get an erection

What dose should I take?

The recommended starting dose for Sildenafil is 50mg.

It should be taken 1 hour before sexual activity.

If you achieve the desired result but are suffering from side effects, you can reduce the dose to 25mg. However, if after trying the 50mg strength four times, on separate occasions, without the desired result or any side effects; increase the dose to 100mg.

If you have tried the 100mg strength on eight separate occasions without the desired result then you should consult your own G.P.

You should not take Sildenafil more than once a day.

What are the side effects and interactions?

Side effects are rare but you may experience:

  • Runny or blocked nose
  • Dizziness
  • Headache
  • Facial flushing
  • Indigestion
  • Blurred vision or sensitivity to light

It’s a very rare side effect, but if you have a prolonged erection for more than 4 hours then you need to contact your doctor immediately.

Interactions :-

  • Nitrates interact very adversely with all phosphodiesterase type 5 inhibitors like Spedra, Viagra, Cialis, Levitra and sildenafil. They can cause a FATAL lowering of blood pressure and should NEVER be used together.
  • Nitrates include medications like GTN spray, isosorbide mononitrate or nicorandil for angina. Also, the recreational drugs called "poppers" should be avoided.

Choosing Generic Sildenafil vs Viagra

Viagra is the brand name for the medication created by Pfizer in the late 90s. The active ingredient in Viagra is Sildenafil and the composition couldn’t be recreated, by law, until Pfizer’s production patent ended on 21st June 2013. Now it can be produced and distributed by other manufacturers, in the generic form of Sildenafil.

Generic forms of the medication are quality controlled to the same standards as the brand name versions; they are just as safe and effective but generally cost less.

Sildenafil or generic Cialis(Tadalalfil) 

Although Sildenafil and Tadalafil take a similar amount of time to be active (within 30-60 mins), Tadalafil has a much longer duration of action. 

Sildenafil remains in your system for about 4-6 hours. This doesn’t mean that you will have an erection for that length of time but that you will be able to achieve and maintain an erection when sexually stimulated for that window of time.

Tadalafil is called the ‘week-end pill’ as it can be taken on a Friday night and still be effective on a Sunday morning due to its long duration of action of 36 hours.


Is Viagra better than Sildenafil?

No, Viagra and Sildenafil both contain exactly the same active ingredient. They are both equally effective but sildenafil is much cheaper.

What is Viagra?

Viagra is the most well-known treatment for erectile dysfunction, ED which is also referred to as impotence.
The active ingredient in Viagra is sildenafil which dilates the blood vessels leading to the penis to enable a firm, long lasting erection when a man is sexually aroused or stimulated.

How long does it last?

On average Viagra will last between 4-6 hours. It varies from man to man as it can be affected by a number of things such as age, dosage, diet, alcohol consumption, general health and its interaction with other medication.

How long does it take to work?

It usually takes between 30-60 mins to be effective. It’s best taken on an empty stomach as it increases the rate at which the Viagra is absorbed into the body. If it’s taken after a large meal then it can take longer before it produces the desired effect.

What dosage of Viagra or sildenafil should I take?

The dose you use depends on your general health and how well you respond to it.
Both sildenafil and Viagra come in the following doses :-

25mg: A reduced dose for those that find the 50mg dose effective but are experiencing some side-effects. You can try this dose and see if it’s equally effective to the 50mg dose but doesn’t produce any side-effects.

50mg: The recommended dose for most men taking sildenafil or Viagra for the first time.

100mg: A higher dose for when the 50mg dose is not as effective as you would like.

What’s the difference between sildenafil and Viagra?

Medically, there is no difference between sildenafil and Viagra. Viagra is a brand name with sildenafil as the active ingredient.

Viagra came off patent in 2013 and so other drug companies that manufacture generic medicines could make sildenafil and provide it at a much lower cost to pharmacies.

Both are available in 25mg, 50mg and 100mg strengths and in pack sizes of 4, 8, 16 and 32. Sildenafil can also be bought in 64’s.

Are there any alternatives to sildenafil? 

If sildenafil has not been effective after trying both strengths, 50mg and 100mg, on about 6-8 separate occasions then there are other ED products to try.
Cialis, Levitra and Spedra are all members of the same family of ED medication but have different durations and onsets of action. If one ED medication doesn’t work for you then it’s worthwhile trying another.

Viagra: The most well- known ED treatment often referred to ‘the little blue pill’.
Sildenafil: The generic version of Viagra. It came on sale in 2013 when the patent for Viagra ran out. It works in exactly the same way as Viagra but is much cheaper.

Cialis: Called the ‘week-end pill’ as it can be taken on a Friday night and still be effective on a Sunday morning due to its long duration of action of 36 hours.

Spedra: As the name suggests, it has the fastest onset of action and can be effective in as little as 15 mins.

Levitra: There is some evidence to suggest that it’s best for diabetics.

Cialis Daily: After taking it for 4-5 days you will be ready to respond to any sexual stimulation spontaneously.

What is the difference between sildenafil, Viagra, Cialis, Levitra and Spedra?

All of these medications belong to a group of drugs called ‘PDE5 inhibitors’ and work in the same way. They dilate the blood vessels leading to the penis resulting in a firm, longer lasting erection.

However, they do have different durations of action :-

Viagra, Sildenafil, Levitra and Spedra all remain in your system for about 4-6 hours. This doesn’t mean that you will have an erection for that length of time but that you will be able to achieve and maintain an erection when sexually stimulated for that window of time.

Cialis has a much longer duration of action, 36 hours, and that is why it’s referred to as the week-end pill as you can take it on a Friday night and it’s still in your system on Sunday morning.

They also have different onsets of action with Viagra, sildenafil, Levitra and Cialis being active within 30-60 mins but the newest medication to be introduced, Spedra, as its name would suggest, can be active in as little as 15 mins.

Can I take sildenafil with either Cialis, Levitra or Spedra?

No. You should never take two types of ED medication at the same time as it could lead to a dangerous overdose.

If you start with the recommended dose of 50mg sildenafil and find that it’s still not effective after several attempts then you can try 100mg the next time.

If you wish to try a different strength of sildenafil or another type of ED medication then you should wait at least 24 hours after taking sildenafil, Levitra or Spedra and 48 hours after taking Cialis. You have to wait longer after taking Cialis as it has a much longer duration of action than the others and will be in your bloodstream for much longer.

Why is Sildenafil cheaper than Viagra?

Viagra was the original ‘blue pill’ for erectile dysfunction, made by Pfizer. When it’s patent expired in 2013 other drug manufacturers could make it under the generic name, sildenafil.
It’s medically identical to Viagra and has exactly the same effects and side-effects. Viagra is simply a branded form of sildenafil and like most branded products, it comes at a premium price. Sildenafil is much better value for money.

Why are there so many brands of sildenafil? 

 Since Pfizer’s patent expired, other drug companies have been able to manufacture generic sildenafil. There are many companies that make generic medicines to be marketed it the UK. These companies include Mylan, Sandoz, Accord, Teva, Torrent, Ajanta, Dr Reddy’s and Zentiva. Even Pfizer make a generic brand of sildenafil that is cheaper than Viagra but more expensive than other generic equivalents. The tablets may differ in size, shape and colour but they are all medically very similar.

What is the best brand of sildenafil?

If purchased from a UK registered and regulated pharmacy, all brands of sildenafil will be genuine medication and have the same desired effect. The active ingredient in all of the brands is exactly the same but the other ingredients or ‘excipients’ that make up the bulk of the tablet may vary. Our Mylan brand of sildenafil is lactose free which is very important for those who have an intolerance or are allergic to lactose. The patient information leaflet supplied with each brand of sildenafil gives a full list of all the ingredients of each tablet.

Why does the price of sildenafil vary?

The price of sildenafil offered by each pharmacy varies as each supplier decides on their own prices. Some pharmacies mark the product price up more than others.
At Webmed Pharmacy we choose to keep the prices as low as possible while still offering the best service with guaranteed next working day tracked delivery as standard.

We aim to offer our customers the best value with a discreet, fast delivery service so that that they return to us time and time again.

Is sildenafil available over the counter?

No. Sildenafil is a prescription only medicine and so is not able to be bought over the counter. A prescription must be issued by a GMC registered doctor and dispensed from a UK registered pharmacy. Then you can be sure of receiving genuine medication.

At Webmed pharmacy our doctor issues you a prescription electronically that is sent straight to our pharmacy where we dispense it and deliver it to your chosen address. Therefore, you don’t need to visit your GP and can order in the comfort of your own home.

Is sildenafil available on the NHS?

Sildenafil is available on the NHS to those who meet very strict eligibility criteria and then only in limited amounts. If you meet the criteria you may still wish to buy extra if you find that you are not being prescribed a sufficient quantity.

Can I drink with sildenafil?

It’s best to avoid drinking alcohol when taking sildenafil. If you do choose to drink, then you should limit the quantity to one or two units as alcohol can reduce the effectiveness of sildenafil. Also, as both alcohol and sildenafil can lower blood pressure you may find that you feel dizzy and ruin your enjoyment of the experience.

Download the Patient Information Leaflet

Cheaper than Viagra, but does the job just as well!

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