Choosing the correct strength

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Sildenafil 25mg
This is the recommended dose if you found 50mg effective, but you experienced side effects at this strength.


Sildenafil 50mg
Starting dose usually recommended for most men taking sildenafil for the first time.


Sildenafil 100mg
High strength dose for when 50mg is insufficient, or erection lasts less than 4 hours.


Choosing Generic vs Branded Sildenafil

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Generic medicines contain the same active ingredient and are equally effective and equivalent as the branded products but are available at a lower price. Generic manufacturers have to demonstrate that they are medically identical to the branded product before they can be sold - i.e. they offer the same quality, strength, stability and effectiveness.


Sildenafil (Generic Viagra)

Erectile Dysfunction Treatment


£17.99 (includes free private prescription)
Only £4.50 per tablet

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Compare Prices to Competitors

Sildenafil 25mg
MedExpress Lloyds Pharmacy Health Express Chemist Direct
4 tablets
£ 9.99
£16.00 £39.95 £15.00
8 tablets
£ 19.99 £24.00 £78.95 £23.00
12 tablets
£ 29.99 - £117.95 £34.00
16 tablets
£ 39.99 £45.00 £154.95 £44.00
24 tablets
£ 59.99 - - -
28 tablets
£ 69.99 - - -
32 tablets
£ 79.99 - £301.95 £85.00
64 tablets
£ 89.99 - £569.95 -
UK Price Comparison. Comparison Date 19/04/2016 Source: comparepharmacy.co.uk
Sildenafil 50mg
MedExpress Boots Online Lloyds Pharmacy Health Express Chemist Direct
4 tablets
£ 17.99
£19.00 £24.00 £41.95 £23.00
8 tablets
£ 29.99 £30.00 £40.00 £82.95 £39.00
12 tablets
£ 39.99 - - £123.95 £58.00
16 tablets
£ 49.99 £50.00 £68.00 £162.95 £76.00
24 tablets
£ 69.99 - - - -
28 tablets
£ 79.99 - - - -
32 tablets
£ 89.99 - - £316.95 £130.00
64 tablets
£ 139.99 - - £600.95 -
UK Price Comparison. Comparison Date 19/04/2016 Source: comparepharmacy.co.uk
Sildenafil 100mg
MedExpress Boots Online Lloyds Pharmacy Health Express Pharmacy2U Chemist Direct
4 tablets
£ 19.99
£22.00 £32.00 £43.95 £27.00 £25.00
8 tablets
£ 34.99 £36.00 £48.00 £86.95 £45.00 £39.00
12 tablets
£ 49.99 - - £129.95 £60.00 £58.00
16 tablets
£ 59.99 £60.00 £76.00 £170.95 £75.00 £76.00
24 tablets
£ 79.99 - - - £100.00 -
28 tablets
£ 89.99 - - - - -
32 tablets
£ 99.99 - - £331.95 £130.00 £130.00
64 tablets
£ 159.99 - - £630.95 - -
UK Price Comparison. Comparison Date 19/04/2016 Source: comparepharmacy.co.uk

Sildenafil Info

What is Sildenafil?

Sildenafil citrate is the generic version of the Viagra, the most well known treatment for erectile dysfunction (ED).

Sildenafil is an effective, modern medicine used to treat erectile dysfunction (ED). When you take Sildenafil you may be able to:
Improve your ability to get and maintain an erection
Be more confident in your ability to get and maintain an erection
Be satisfied with the hardness of your erections

What is the difference between Viagra and Sildenafil?

Sildenafil is the active ingredient in Viagra and is available in a generic, unbranded tablet. Sildenafil and Viagra are medically equivalent but Sildenafil is available at a much lower cost.

Generic medicines contain the same active ingredient and are equally effective and medically equivalent as the branded products but are available at a lower price. Generic manufacturers have to demonstrate that they are medically identical to the branded product - i.e. they offer the same quality, strength, stability and effectiveness.

Visit our Generic Medicine FAQ for more information.

Choosing the Correct Dosage

The recommended starting dose for sildenafil is one 50mg tablet taken 1 hour before sexual activity. If you achieve the desired effect but are suffering from side effects, try lowering the dose to 25mg. If after trying 50mg tablets four times without the desired effect, and you are not experiencing side effects, increase the dose to 100mg. If after trying 100mg 8 separate times without effect you should cease treatment and consult your doctor. You should not take sildenafil more than once a day as this will have not increase the effectiveness and may increase the likelihood of experiencing side effects.

How To Take

You should take Sildenafil about one hour before you plan to have sex. Swallow the tablet whole with a glass of water.

Sildenafil can be taken with or without food. However, you may find that Sildenafil takes longer to start working if you take it with a heavy meal.

Why is the Price of Sildenafil Lower Than Viagra?

As Sildenafil is a generic drug it is produced by several manufacturers, which helps to lower the price. Viagra is produced only by Pfizer who set the price. The two products are medically identical but because of the brand name of Viagra the product sells at a substantial premium.

Side Effects

Common Side Effects

  • pain in your back/muscles/head
  • migraines
  • getting flushed/going red
  • indigestion
  • feeling and or being sick
  • getting a blocked or runny nose
  • vision disturbances

Alternatives

Alternatives to Sildenafil

Counselling

For many men suffering from erectile dysfunction the primary cause may be related to psychological issues and not physical ones.

In these cases, counselling can prove to be a very effective form of treatment. Talking with a mental health professional will help to address issues of stress, anxiety or depression, which can all contribute to erectile dysfunction. For further information contact your GP.

Other ED Medications

We offer a range of ED medications. View our full range erectile dysfunction treatments.

Authored 22 April 2014 by Dr Clare Morrison Reviewed 31 January 2019 by Liyya Patel, Siobhan Titre Last updated 11 November 2018

Recent Sildenafil Reviews

4.7 / 5
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2,935
4
861
3
58
2
50
1
33

Based on 3937 independent customer reviews taken by Feefo (see all MedExpress Reviews).

"I'm a Happy Chappy!"
By Alistair (London) on 02 December 2019

Product:

First time user of this product, but it works well & is good for me. The price is competitive with similar products available.

Service:

Prompt delivery, genuine product (one has to be careful of sites offering placebos on the internet), good price!

"Prompt derlivery"
By M.T. on 29 November 2019

Product:

Did the job without any side effects

Service:

Completed a simple on-line medical questionnaire to make the purchase and then delivery was very prompt.

By Gary on 21 November 2019

Product:

great product

Service:

very good

By John on 14 November 2019

Product:

Good value for money and positive results

Service:

Good fast and professional service

"Hassle Free Service"
By David on 13 November 2019

Product:

Always delivered promptly, reliable product

Service:

The service is always good, product good, hassle free and delivered on time. I could go to the pharmacy but with the hours I work MedExpress is convenient and saves time and driving to the pharmacy. Recommended

Read More Sildenafil Reviews

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