Trustpilot logo
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot
star_trustpilot

Sildenafil (generic Viagra®)

Erectile dysfunction treatment

starstarstarstarstar
starstarstarstarstar
4,204 reviews
chevron_left
Sildenafil 50mg
chevron_right

Edit

£0.00

 a tablet
Get startedarrow_right_alt
  • check_circle_filledMedically equivalent to Viagra®
  • check_circle_filledResults in 30-60 minutes
  • check_circle_filledEffects can last for up to 4 hours

Sildenafil information

Sildenafil 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
Sildenafil is effective at treating erectile dysfunction in the majority of men (at least 80% of men). It may have less of an effect with ED caused by psychological factors, and may not work if taken alongside a heavy meal or other drugs. If you aren’t getting the results you want please contact us.
Sildenafil is the active ingredient in Viagra®, and it’s also available as a generic, unbranded tablet. Both treatments are medically identical, but Viagra® costs more because of the premium brand name.
Sildenafil can last up to 4 hours, with peak effects in 2 hours. This will depend on factors including your dosage and your body’s metabolism.
Take one pill about an hour before you plan to have sex. Swallow the tablet whole with water. It’s important to take it without food, as the fat in your meal can make it less effective. You should also avoid drinking too much alcohol, as this can counteract the benefits. If you take any other medications, check with your GP before taking sildenafil to make sure they don’t interact with your pill.
Sildenafil is available in three doses: 50mg, 25mg and 100mg.
50mg
The starting dose usually recommended for men taking Sildenafil for the first time.
25mg
This is the recommended dose if you found 50mg effective, but experienced some side effects. It may also be prescribed if you’re over 65.
100mg
A high-strength dose used if you find 50mg isn’t effective enough, or your erection lasts less than 4 hours
The most common side effects of Sildenafil are: headaches, muscle aches, back pain, flushing and indigestion. In most cases, these settle after an hour. Please speak with your GP or pharmacist if you experience any side effects for a prolonged period of time.
Always read the patient information leaflet before starting treatment.View patient information leaflet

troubleshootSildenafil facts

  • Time to feel the effect
    30–60 mins
  • Effect lasts for
    Up to 4 hours
  • Available strengths
    25mg, 50mg, 100mg
  • Active ingredient
    Sildenafil citrate
  • Branded equivalent

How it works

  1. Step 1 illustration

    1. Answer quick questions

    No GP or pharmacy visits, just a quick online consultation.

  2. Step 2 illustration

    2. Choose your treatment

    Select from our recommended UK-licensed medications.

  3. Step 3 illustration

    3. Get it delivered fast

    We’ll deliver direct to you, as quickly as tomorrow.

package_2_600Express delivery

  • Royal Mail 1st Class£2.90
    Usually delivered the next working day
  • Special Delivery 1pm£5.95
    Guaranteed next working day by 1pm
  • Special Delivery 9am£13.95
    Guaranteed next working day by 9am
  • Post Office Collection£3.95
    Usually collection next working day
  • Same Day (London)from £4.95
    Cost calculated at checkout
Convenient experience illustration

Why use MedExpress?

  • hotel_class

    Trusted by more than 675,000 customers since 2013

  • fact_check

    London based licenced pharmacy

  • local_shipping

    Fast, flexible delivery options

  • verified

    Lowest price guarantee

Backed by our experienced UK-based medical team

Dr Catriona Maybury picture

Dr Catriona Maybury

Medical Director | MBChB, MRCP, PhD

GMC: 6130975

Declan Lismore picture

Declan Lismore

Superintendent Pharmacist | MPharm, MRPharmS, MPSI, PGDip

GPhC: 2073498

Dr Paul Davis picture

Dr Paul Davis

UK Medical Operations Lead | BSc MB BS DCH MRCGP

Dr Safia Hussain picture

Dr Safia Hussain

MBBS, BSc, MRCGP, DRCOG, PGDip Clinical Dermatology

MedExpress lowest price guarantee badge

Lowest price guarantee

We’re confident you won’t find the same medication and service cheaper. If you do, we’ll refund the difference. See more

Sildenafil prices

Starting prices for all pack sizes.
Strengths available: 25mg, 50mg and 100mg

Quantity
Price from
4 tablets 
£9.99£2.50 a tablet
8 tablets 
£19.99£2.50 a tablet
12 tablets 
£29.99£2.50 a tablet
16 tablets 
£39.99£2.50 a tablet
24 tablets 
£59.99£2.50 a tablet
28 tablets 
£69.99£2.50 a tablet
32 tablets 
£79.99£2.50 a tablet
64 tabletsSaves £69.85
£89.99£1.41 a tablet

stethoscope

Authored by Dr Clare Morrison. Last reviewed 01 February 2024 by Liyya Patel and Siobhan Titre.