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Pricing Disclaimer: Prices on some pages may not be up to date — the live pricing table below and pricing shown during consultation are official current prices and take precedence over any other figures on the site.

Sildenafil - UK-licensed prescription Treatment
Treatment

Sildenafil

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Tadalafil - UK-licensed prescription Treatment
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Viagra Connect 50mg - UK-licensed prescription Treatment
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Buy Sildenafil 100mg Online UK - Fast & Discreet

When you buy sildenafil 100mg online UK from Cured Pharmacy, you're accessing genuine UK-licensed medication from just £0.45 per tablet with transparent upfront pricing. Our GPhC-registered pharmacy (9012511) provides free clinical consultations with UK prescribers, typically completed in under 3 minutes, followed by discreet next-day delivery across the UK.

How Sildenafil 100mg Works for Erectile Dysfunction

Sildenafil 100mg belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors, originally developed by Pfizer and now widely available as a generic treatment in the UK [1]. The active ingredient works by relaxing smooth muscle tissue in the blood vessels of the penis, allowing increased blood flow when sexually stimulated.

Clinical trials demonstrate that sildenafil 100mg produces successful erections in approximately 82% of men with erectile dysfunction across various underlying causes, including diabetes, cardiovascular disease, and psychological factors [1][2]. The medication typically begins working within 30-60 minutes of administration, with effects lasting up to 4-5 hours.

It's important to understand that sildenafil requires sexual stimulation to be effective — it does not cause spontaneous erections. The medication enhances the body's natural erectile response rather than creating an artificial one, which is why proper timing and realistic expectations are essential for treatment success.

Sildenafil 100mg Dosage and Administration Guidelines

The standard starting dose for most men is sildenafil 50mg, taken approximately one hour before anticipated sexual activity [3]. Your UK prescriber may increase this to 100mg or reduce it to 25mg based on your response and any side effects experienced during initial treatment.

Sildenafil 100mg represents the maximum recommended single dose and should not be taken more than once in a 24-hour period. Taking the tablet on an empty stomach typically produces faster results, as high-fat meals can delay absorption by up to an hour. Swallow the tablet whole with water — do not crush, chew, or split it unless specifically instructed by your prescriber.

When to Take Sildenafil 100mg

For optimal results, take sildenafil 100mg 30-60 minutes before sexual activity. Some men find it effective within 20 minutes, whilst others may need the full hour. Avoid consuming excessive alcohol before taking sildenafil, as this can reduce effectiveness and increase the risk of side effects such as dizziness or headaches.

Sildenafil vs Viagra: Understanding the Difference

Sildenafil is the generic name for the active pharmaceutical ingredient found in Viagra, the original branded medication. Both contain identical active ingredients at the same strengths and work through the same mechanism — the primary difference lies in branding, packaging, and price.

Generic sildenafil became available in the UK after Pfizer's patent expired in 2013, allowing multiple manufacturers to produce bioequivalent versions approved by the MHRA [4]. These generic formulations must meet the same rigorous quality, safety, and efficacy standards as the branded version, making them clinically interchangeable.

At Cured Pharmacy, sildenafil 100mg starts from £0.45 per tablet, representing significant savings compared to branded alternatives whilst maintaining the same therapeutic effect. All our sildenafil products are sourced from UK-licensed manufacturers and dispensed by our GPhC-registered pharmacy team under the supervision of Superintendent Pharmacist Tarun Kumar (GPhC 2233073).

Treatment Active Ingredient Duration of Action Starting Price
Sildenafil Sildenafil citrate 4-5 hours From £0.45
Tadalafil Tadalafil Up to 36 hours From £9.99
Viagra Connect 50mg Sildenafil citrate 4-5 hours From £11.49
Cialis (Tadalafil) Tadalafil Up to 36 hours From £53.00

Common Side Effects and Safety Considerations

Most men tolerate sildenafil 100mg well, but some experience mild to moderate side effects that typically diminish with continued use [2]. The most frequently reported side effects include headaches (affecting approximately 16% of users), facial flushing (10%), indigestion (7%), and nasal congestion (4%).

Visual disturbances such as mild blue-tinted vision or increased light sensitivity occur in roughly 3% of men taking sildenafil 100mg, though these effects are temporary and resolve within a few hours [2]. If you experience sudden vision loss, hearing loss, or an erection lasting longer than 4 hours (priapism), seek immediate medical attention.

Sildenafil should not be taken alongside nitrate medications (commonly prescribed for angina) or certain alpha-blockers, as this combination can cause dangerous drops in blood pressure. Your UK prescriber will review your complete medication list during consultation to ensure sildenafil is safe for you.

Who Should Avoid Sildenafil 100mg

Men with severe cardiovascular disease, recent stroke or heart attack (within 6 months), uncontrolled blood pressure, or severe liver or kidney impairment may not be suitable candidates for sildenafil treatment. Your online consultation with our UK prescribers will assess these contraindications before approving your prescription.

How to Buy Sildenafil 100mg Online UK Safely

Purchasing sildenafil online requires a valid prescription from a UK-registered prescriber, as it is a prescription-only medication (POM) regulated by the MHRA. At Cured Pharmacy, our streamlined process begins with a free online consultation that takes under 3 minutes to complete, covering your medical history, current medications, and any contraindications.

Once submitted, a UK-registered doctor or independent prescriber reviews your consultation within hours. If approved, your prescription is sent electronically to our GPhC-registered pharmacy, where our team dispenses genuine UK-licensed sildenafil and arranges discreet next-day delivery to your chosen address.

Beware of websites offering sildenafil without requiring a consultation or prescription — these are operating illegally and may supply counterfeit or substandard medication that poses serious health risks. Always verify that any online pharmacy displays a GPhC registration number and is listed on the General Pharmaceutical Council's register.

Alternative Erectile Dysfunction Treatments Available

Whilst sildenafil 100mg is highly effective for most men, alternative PDE5 inhibitors may better suit your lifestyle or medical needs. Tadalafil offers a longer duration of action (up to 36 hours), making it ideal for men who prefer spontaneity without timing medication around sexual activity [5].

For men who don't respond adequately to oral medications, options such as vacuum erection devices, intracavernosal injections, or psychological counselling may be recommended. Our UK prescribers can discuss these alternatives during your consultation and help identify the most appropriate treatment pathway based on the underlying cause of your erectile dysfunction.

Combining Treatments for Better Results

Some men benefit from combining sildenafil with lifestyle modifications such as regular exercise, weight management, smoking cessation, and stress reduction techniques. Clinical evidence suggests that addressing cardiovascular health and psychological factors alongside pharmacological treatment produces superior long-term outcomes [5].

Scientific References

  1. Goldstein, I., Lue, T. F., Padma-Nathan, H., Rosen, R. C., Steers, W. D., & Wicker, P. A. (1998). Oral sildenafil in the treatment of erectile dysfunction. New England Journal of Medicine, 338(20), 1397-1404. https://doi.org/10.1056/NEJM199805143382001
  2. Eardley, I., Ellis, P., Boolell, M., & Wulff, M. (2002). Efficacy and safety of sildenafil citrate in the treatment of men with mild to moderate erectile dysfunction. British Journal of Psychiatry, 181(5), 424-428. https://doi.org/10.1192/bjp.181.5.424
  3. Medicines and Healthcare products Regulatory Agency. (2021). Sildenafil 25mg, 50mg and 100mg film-coated tablets: Summary of Product Characteristics. MHRA. https://products.mhra.gov.uk/
  4. European Medicines Agency. (2013). Questions and answers on the withdrawal of the marketing authorisation application for Viagra (sildenafil). EMA/CHMP/627168/2013. https://www.ema.europa.eu/
  5. Montorsi, F., Adaikan, G., Becher, E., Giuliano, F., Khoury, S., Lue, T. F., ... & Wasserman, M. (2010). Summary of the recommendations on sexual dysfunctions in men. Journal of Sexual Medicine, 7(11), 3572-3588. https://doi.org/10.1111/j.1743-6109.2010.02062.x

Information on this page is for educational purposes only and is not medical advice. All prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting any new medication.

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Faq

How much does sildenafil 100mg cost in the UK?
Sildenafil 100mg starts from £0.45 per tablet at Cured Pharmacy, with transparent upfront pricing displayed before your consultation. Final cost depends on the quantity prescribed by your UK clinician.
Can I buy sildenafil 100mg online UK without seeing a doctor?
Sildenafil requires a prescription from a UK-registered prescriber. At Cured Pharmacy, you complete a free online consultation reviewed by our clinical team — no face-to-face appointment needed.
How long does sildenafil 100mg take to work?
Sildenafil 100mg typically begins working within 30-60 minutes of administration, though some men experience effects within 20 minutes. Taking it on an empty stomach may speed absorption.
Is sildenafil 100mg stronger than 50mg?
Yes, sildenafil 100mg contains twice the active ingredient of the 50mg dose and is the maximum recommended single dose. Your prescriber will determine the appropriate strength based on your response and tolerance.
What's the difference between sildenafil and Viagra?
Sildenafil is the generic version of Viagra, containing the same active ingredient at identical strengths. Both are clinically equivalent, but generic sildenafil offers the same effectiveness at a significantly lower cost.
Can I take sildenafil 100mg every day?
Sildenafil 100mg should not be taken more than once in a 24-hour period. For men requiring frequent dosing, daily low-dose tadalafil may be a more suitable alternative — discuss this with your UK prescriber.
Does sildenafil 100mg work for everyone?
Clinical trials show sildenafil 100mg is effective in approximately 82% of men with erectile dysfunction. Response varies based on underlying causes, and some men may benefit from alternative treatments if sildenafil proves ineffective.
How quickly will I receive my sildenafil 100mg order?
Once your prescription is approved, Cured Pharmacy dispenses and dispatches your medication for next-day delivery in discreet, unmarked packaging. Orders placed before our cut-off time typically arrive within 24 hours.