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Sildenafil - UK-licensed prescription Treatment
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Sildenafil

From £0.45

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Tadalafil - UK-licensed prescription Treatment
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From £9.99

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Sildenafil Eropid - UK-licensed prescription Treatment
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Sildenafil Eropid

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Tadalafil (Teva) - UK-licensed prescription Treatment
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From £9.99

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Avarante Tablets Tadalafil Tablets 10mg - UK-licensed prescription Treatment
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Avarante Tablets Tadalafil Tablets 10mg

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Viagra Connect 50mg - UK-licensed prescription Treatment
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Buy Sildenafil Online in the UK - Discreet Service

Published on: June 03, 2026

When you buy sildenafil online in the UK, you gain access to the same active ingredient found in Viagra at a fraction of the cost. At Cured Pharmacy, sildenafil tablets start from just £0.45, with transparent upfront pricing, free clinical consultation by UK prescribers, and 100% discreet packaging delivered to your door.

How Sildenafil Works for Erectile Dysfunction

Sildenafil belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors, licensed by the MHRA for treating erectile dysfunction in adult men [1]. It works by relaxing blood vessels in the penis, allowing increased blood flow when sexually stimulated, which helps achieve and maintain an erection suitable for sexual activity.

Clinical trials demonstrate that sildenafil improves erectile function in approximately 70-80% of men with erectile dysfunction, regardless of underlying cause [1][2]. The medication typically takes effect within 30-60 minutes of administration and remains active for up to four hours, though this varies between individuals based on factors including age, metabolism, and whether taken with food.

It's important to understand that sildenafil requires sexual stimulation to work — it does not cause spontaneous erections. The medication enhances your body's natural erectile response rather than replacing it, making it a physiologically appropriate treatment option when prescribed by a UK healthcare professional.

Sildenafil Dosage and How to Take It

Sildenafil is available in 25mg, 50mg, and 100mg tablet strengths at Cured Pharmacy. Your UK prescriber will determine the appropriate starting dose during your free online consultation, considering your medical history, current medications, and severity of erectile dysfunction symptoms.

Unlike daily-use treatments, sildenafil is taken on-demand, giving you flexibility to use the medication only when needed. This approach suits men who engage in sexual activity less than twice weekly and prefer not to take daily medication.

Finding Your Optimal Dose

Most men start with sildenafil 50mg, taken approximately one hour before sexual activity [3]. Your UK prescriber may adjust this to 25mg if you experience side effects, or increase to 100mg if the initial dose proves insufficient. The maximum recommended frequency is once daily, and taking more than prescribed does not improve effectiveness but may increase side effect risk.

For best results, take sildenafil on an empty stomach or after a light meal. High-fat meals can delay absorption by up to an hour, reducing spontaneity. Avoid grapefruit juice, which interferes with medication metabolism and may increase side effect likelihood.

Sildenafil vs Viagra: Understanding the Difference

Sildenafil and Viagra contain the identical active pharmaceutical ingredient — sildenafil citrate — at the same strengths and with equivalent clinical efficacy [4]. The primary difference lies in branding and cost: Viagra is the original branded product manufactured by Pfizer, while generic sildenafil is produced by multiple licensed pharmaceutical companies following patent expiry.

Both medications meet identical MHRA quality and safety standards. Generic sildenafil undergoes rigorous bioequivalence testing to ensure it performs identically to branded Viagra in the body [4]. Choosing generic sildenafil provides the same therapeutic benefits at significantly lower cost, making treatment more accessible for long-term use.

At Cured Pharmacy, we stock both generic sildenafil and branded options including Viagra Connect, allowing you to choose based on personal preference and budget. Your UK prescriber will discuss which option best suits your needs during your clinical assessment.

Treatment Active Ingredient Duration Starting Price
Sildenafil Sildenafil citrate 4 hours From £0.45
Sildenafil Eropid Sildenafil citrate 4 hours From £8.99
Viagra Connect 50mg Sildenafil citrate 4 hours From £11.49
Tadalafil Tadalafil Up to 36 hours From £9.99
Tadalafil (Teva) Tadalafil Up to 36 hours From £9.99
Cialis (Tadalafil) Tadalafil Up to 36 hours From £53.00

Common Side Effects and Safety Considerations

The most frequently reported side effects of sildenafil include headache (affecting approximately 16% of users), facial flushing (10%), indigestion (7%), and nasal congestion (4%) [2]. These effects are generally mild to moderate in severity and typically resolve within a few hours as the medication clears your system.

Sildenafil is contraindicated in men taking nitrate medications for angina or chest pain, as the combination can cause dangerous blood pressure drops. It should also be used cautiously in men with severe cardiovascular disease, recent stroke or heart attack, or certain eye conditions [3]. Your UK prescriber will review your full medical history during consultation to ensure sildenafil is safe for you.

Managing Side Effects

Most side effects are mild and temporary, diminishing as your body adjusts to the medication. If headaches persist, taking sildenafil with food or reducing caffeine intake may help. For nasal congestion, a saline nasal spray provides relief without interfering with sildenafil's effectiveness.

Rare but serious side effects require immediate medical attention: sudden vision or hearing loss, chest pain during sexual activity, or an erection lasting longer than four hours (priapism). These occur in fewer than 1% of users but necessitate urgent evaluation [2].

Why Choose Sildenafil from Cured Pharmacy

Cured Pharmacy offers genuine UK-licensed sildenafil with complete transparency on pricing before you begin your consultation. Unlike some online providers, we display exact costs upfront, with sildenafil tablets starting from £0.45 — representing exceptional value compared to typical UK market rates.

Our GPhC-registered pharmacy (registration 9012511) is led by Superintendent Pharmacist Tarun Kumar (GPhC 2233073), ensuring every prescription is dispensed to the highest professional standards. Your free online consultation takes under three minutes and is reviewed by UK-registered prescribers who specialise in men's health conditions.

We guarantee 100% discreet packaging with no external markings indicating contents, and offer fast delivery across the UK. All medications are sourced from licensed UK wholesalers and stored in our temperature-controlled pharmacy facility, maintaining product integrity from manufacture to your door.

Alternatives to Sildenafil for Erectile Dysfunction

Tadalafil represents the main alternative PDE5 inhibitor available at Cured Pharmacy. While sildenafil remains active for approximately four hours, tadalafil offers a significantly longer duration of action — up to 36 hours — earning it the nickname 'the weekend pill' [5]. This extended window provides greater spontaneity for some couples.

Tadalafil is also available as a low-dose daily treatment (2.5mg or 5mg), allowing continuous readiness for sexual activity without timing doses around intimacy. This approach suits men who engage in sexual activity more than twice weekly and prefer not to plan ahead [5]. Both on-demand and daily tadalafil options are available through Cured Pharmacy following clinical assessment.

Choosing Between PDE5 Inhibitors

Your UK prescriber will help determine which PDE5 inhibitor best matches your lifestyle and treatment goals. Factors including frequency of sexual activity, desired spontaneity, side effect profile, and cost all influence the optimal choice. Some men try multiple options before finding their preferred treatment.

Beyond oral medications, treatment options may include vacuum erection devices, penile injections, or addressing underlying causes such as diabetes control, cardiovascular health optimisation, or psychological factors. A comprehensive approach often yields the best long-term outcomes.

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 [accessed 13 August 2026]
  2. Carson, C. C., & Lue, T. F. (2005). Phosphodiesterase type 5 inhibitors for erectile dysfunction. BJU International, 96(3), 257-280. https://doi.org/10.1111/j.1464-410X.2005.05614.x [accessed 13 August 2026]
  3. Eardley, I., Donatucci, C., Corbin, J., El-Meliegy, A., Hatzimouratidis, K., McVary, K., Munarriz, R., & Lee, S. W. (2010). Pharmacotherapy for erectile dysfunction. Journal of Sexual Medicine, 7(1), 524-540. https://doi.org/10.1111/j.1743-6109.2009.01627.x [accessed 13 August 2026]
  4. Medicines and Healthcare products Regulatory Agency. (2013). Generic medicines: bioequivalence and interchangeability. GOV.UK. https://www.gov.uk/government/publications/generic-medicines [accessed 13 August 2026]
  5. Porst, H., Giuliano, F., Glina, S., Ralph, D., Casabé, A. R., Elion-Mboussa, A., & Sorsaburu, S. (2006). Evaluation of the efficacy and safety of once-a-day dosing of tadalafil 5mg and 10mg in the treatment of erectile dysfunction. European Urology, 50(2), 351-359. https://doi.org/10.1016/j.eururo.2006.02.052 [accessed 13 August 2026]
  6. NHS. (2026). Erectile dysfunction (impotence). https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ Accessed 13 August 2026.

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 cost in the UK?
Sildenafil starts from £0.45 per tablet at Cured Pharmacy, making it one of the most affordable erectile dysfunction treatments available through UK-registered pharmacies. Final cost depends on your prescribed strength and quantity.
Can I buy sildenafil online UK without seeing a doctor?
Sildenafil is a prescription-only medication in the UK, so you cannot legally purchase it without a prescription. However, at Cured Pharmacy, you complete a free online consultation reviewed by UK prescribers, eliminating the need for a face-to-face GP appointment.
Is generic sildenafil as effective as Viagra?
Yes. Generic sildenafil contains the identical active ingredient at the same strengths as branded Viagra and meets the same MHRA quality standards. Clinical effectiveness is equivalent, with the only difference being cost and packaging.
How long does sildenafil take to work?
Sildenafil typically takes 30-60 minutes to become effective, though this varies between individuals. Taking it on an empty stomach may speed absorption, while high-fat meals can delay onset by up to an hour.
What is the difference between sildenafil 50mg and 100mg?
The 50mg dose is the standard starting strength for most men, while 100mg is the maximum licensed dose for those who need stronger effects. Your UK prescriber will determine the appropriate strength based on your response and tolerance.
Can I take sildenafil every day?
While sildenafil can be taken daily if needed, it's designed as an on-demand treatment. The maximum recommended frequency is once per 24-hour period. If you require treatment more than twice weekly, daily tadalafil may be more suitable and cost-effective.
Does sildenafil work for everyone?
Clinical trials show sildenafil improves erectile function in approximately 70-80% of men with erectile dysfunction. Effectiveness depends on underlying causes, with some conditions responding better than others. Your prescriber can discuss realistic expectations during consultation.
Is it safe to buy sildenafil online in the UK?
Yes, when purchased from GPhC-registered pharmacies like Cured Pharmacy (registration 9012511). Avoid unregulated websites offering sildenafil without prescription, as these may supply counterfeit or unsafe medications that bypass essential safety checks.
How much does sildenafil cost at Cured Pharmacy?
Sildenafil starts from just £0.45 per tablet at Cured Pharmacy, making it one of the most affordable erectile dysfunction treatments available. Prices vary depending on dosage strength and quantity ordered, with better value on larger packs.
Can I buy sildenafil online without seeing a doctor in the UK?
You cannot buy sildenafil without a prescription in the UK, but Cured Pharmacy offers a free online consultation with qualified prescribers. If approved, your prescription is issued digitally and your medication dispatched discreetly the same day.
What is the difference between sildenafil and Viagra?
Sildenafil is the generic version of Viagra, containing the same active ingredient and working identically to treat erectile dysfunction. The main difference is price – generic sildenafil costs significantly less than branded Viagra while delivering the same results.
How quickly will my sildenafil be delivered in the UK?
Cured Pharmacy offers next-day delivery across the UK when you order before our daily cut-off time. All sildenafil orders are sent in discreet, unmarked packaging to protect your privacy, with tracking available on every shipment.
Is sildenafil safe to use long term for erectile dysfunction?
Sildenafil is safe for long-term use when taken as prescribed by a healthcare professional. Our clinicians at Cured Pharmacy regularly review your treatment to ensure it remains suitable, and you can contact our pharmacy team anytime with questions about ongoing use.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Reviewed on: June 03, 2026

Last reviewed: 13 August 2026

Last updated on 13 August 2026.

Review History

Our experts continually monitor new findings in health and medicine, and we update our articles when new information becomes available.

Why this page was updated on 13 August 2026

Content checked and updated as part of our periodic review, to ensure accuracy and currentness.

Current version (13 August 2026)

Edited by: The Editorial Team

Medically reviewed by:

Tarun Kumar, GPhC No. 2233073, Prescribing Pharmacist


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