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Sildenafil - UK-licensed prescription Treatment
Treatment

Sildenafil

From £0.45

Future orders save 5%
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Tadalafil - UK-licensed prescription Treatment
Treatment

Tadalafil

From £9.99

Future orders save 5%
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Sildenafil Eropid - UK-licensed prescription Treatment
Treatment

Sildenafil Eropid

From £8.99

Future orders save 5%
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Tadalafil (Teva) - UK-licensed prescription Treatment
Treatment

Tadalafil (Teva)

From £9.99

Future orders save 5%
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Avarante Tablets Tadalafil Tablets 10mg - UK-licensed prescription Treatment
Treatment

Avarante Tablets Tadalafil Tablets 10mg

From £11.49

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Viagra Connect 50mg - UK-licensed prescription Treatment
Treatment

Viagra Connect 50mg

From £11.49

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Viagra 100mg: Branded vs Generic Options

Choosing between viagra 100mg branded vs generic uk options is one of the most common questions our clinical team addresses. At Cured Pharmacy, we dispense both branded and generic sildenafil 100mg formulations, all licensed by the MHRA and subject to identical UK quality standards. Understanding the differences helps you make an informed choice that balances clinical efficacy with cost-effectiveness.

What's the Difference Between Branded Viagra and Generic Sildenafil?

Branded Viagra and generic sildenafil contain the identical active pharmaceutical ingredient — sildenafil citrate — at the same 100mg strength [1]. When Pfizer's patent on Viagra expired in the UK in 2013, other pharmaceutical manufacturers gained regulatory approval to produce bioequivalent versions. These generic formulations must demonstrate identical absorption rates, peak plasma concentrations, and clinical efficacy to satisfy MHRA licensing requirements [2].

Choosing between viagra 100mg branded vs generic uk options is one of the most common questions our clinical team addresses. At Cured Pharmacy, we dispense both branded and generic sildenafil 100mg formulations, all licensed by the MHRA and subject to identical UK quality standards. Understanding the differences helps you make an informed choice that balances clinical efficacy with cost-effectiveness.

Clinical trials confirm no measurable difference in treatment outcomes between branded and generic formulations when bioequivalence standards are met [1][2]. Your UK prescriber will assess which option suits your medical history and budget during your free online consultation, which takes under three minutes to complete.

How Sildenafil 100mg Works for Erectile Dysfunction

The primary distinction lies in branding, packaging, and price. Branded Viagra carries Pfizer's trademark blue diamond-shaped tablet and premium pricing, whilst generic sildenafil from manufacturers like Teva, Accord, and Mylan offers the same therapeutic effect at a fraction of the cost. At Cured Pharmacy, the cheapest viagra 100mg branded vs generic uk option — generic sildenafil 100mg — starts from £0.45 per tablet, compared to significantly higher costs for the branded equivalent.

The medication requires approximately 30 to 60 minutes to take effect, with peak plasma concentrations reached within one hour of oral administration [3]. Effects can last up to four to five hours, though this varies between individuals based on factors including age, liver function, and concurrent medications. Sildenafil does not cause spontaneous erections — sexual stimulation remains necessary for the medication to work effectively.

In pivotal clinical trials, sildenafil 100mg demonstrated significant improvements in erectile function scores compared to placebo, with approximately 82% of men reporting improved erections [4]. These outcomes apply equally to both branded Viagra and generic sildenafil formulations, as bioequivalence standards ensure identical pharmacokinetic profiles.

Onset Time and Duration of Action

Most men find sildenafil 100mg begins working within 30 to 60 minutes when taken on an empty stomach [3]. High-fat meals can delay absorption by up to one hour, so timing your dose relative to food intake affects onset speed. The therapeutic window typically extends four to five hours, allowing spontaneity within that timeframe without requiring precise scheduling of sexual activity.

Cost Comparison: Cheapest Viagra 100mg Branded vs Generic UK

Price represents the most significant practical difference between branded and generic options. At Cured Pharmacy, generic sildenafil 100mg costs from £0.45 per tablet, making it one of the most cost-effective erectile dysfunction treatments available through UK-registered pharmacies. This transparent upfront pricing applies before you complete your clinical consultation, with no hidden fees or subscription requirements.

Branded Viagra commands a premium due to Pfizer's marketing investment and brand recognition, though the clinical outcomes remain identical to generic alternatives. For patients requiring regular treatment, choosing generic sildenafil can result in substantial annual savings whilst maintaining the same therapeutic benefit. All sildenafil formulations we dispense are sourced from UK-licensed wholesalers and manufactured to British Pharmacopoeia standards.

Price represents the most significant practical difference between branded and generic options. At Cured Pharmacy, the cheapest viagra 100mg branded vs generic uk — generic sildenafil 100mg — costs from £0.45 per tablet, making it one of the most cost-effective erectile dysfunction treatments available through UK-registered pharmacies. This transparent upfront pricing applies before you complete your clinical consultation, with no hidden fees or subscription requirements.

NHS vs Private Prescription Costs

Sildenafil is not routinely available on NHS prescription for erectile dysfunction unless the condition results from specific underlying causes such as diabetes, prostate surgery, or spinal injury [5]. Most UK men access sildenafil through private prescriptions, where generic options offer the most economical route to treatment. Cured Pharmacy's pricing includes the medication, clinical consultation, and discreet home delivery with no additional consultation fees.

Treatment Active Ingredient Duration Starting Price
Generic Sildenafil 100mg Sildenafil citrate 4-5 hours From £0.45
Branded Viagra 100mg Sildenafil citrate 4-5 hours Premium pricing
Tadalafil Tadalafil Up to 36 hours From £9.99
Viagra Connect 50mg Sildenafil citrate 4-5 hours From £11.49

Choosing Between Viagra 100mg and Alternative ED Treatments

Whilst sildenafil 100mg remains the most widely prescribed erectile dysfunction treatment in the UK, alternative PDE5 inhibitors may suit certain patients better based on lifestyle factors and individual response. Tadalafil, available at Cured Pharmacy, offers a longer duration of action — up to 36 hours — making it preferable for men who value greater spontaneity without timing doses around anticipated sexual activity [6].

Sildenafil is not routinely available on NHS prescription for erectile dysfunction unless the condition results from specific underlying causes such as diabetes, prostate surgery, or spinal injury [5]. Most UK men seeking the cheapest viagra 100mg branded vs generic uk access sildenafil through private prescriptions, where generic options offer the most economical route to treatment. Cured Pharmacy's pricing includes the medication, clinical consultation, and discreet home delivery with no additional consultation fees.

Some patients find they respond better to one PDE5 inhibitor over another due to individual pharmacokinetic differences, though the majority achieve good results with first-line sildenafil therapy. If you've tried sildenafil without success, discussing alternative options like tadalafil with your UK prescriber during your consultation can help identify the most suitable treatment for your circumstances.

Safety Profile and Common Side Effects of Sildenafil 100mg

Sildenafil 100mg is generally well-tolerated, with most side effects being mild to moderate and transient [4]. The most frequently reported adverse effects include headache (occurring in approximately 16% of users), facial flushing (10%), and dyspepsia or indigestion (7%). These symptoms typically resolve within a few hours as the medication clears from your system.

Visual disturbances — particularly a blue tinge to vision or increased light sensitivity — occur in approximately 3% of men taking the 100mg dose [4]. These effects result from sildenafil's mild activity on PDE6 enzymes in the retina and are temporary, resolving completely once the medication is metabolised. Nasal congestion and dizziness affect smaller percentages of users but can be bothersome for some individuals.

Serious adverse events are rare when sildenafil is prescribed appropriately. The medication is contraindicated in men taking nitrate medications for angina, as the combination can cause dangerous drops in blood pressure [3]. Your UK prescriber will screen for contraindications during your online consultation, including cardiovascular conditions, recent stroke or heart attack, and medications that interact with sildenafil. All prescription treatments at Cured Pharmacy require clinical assessment by a UK-registered prescriber to ensure safe, appropriate use.

When to Seek Medical Advice

If you experience an erection lasting longer than four hours (priapism), seek immediate medical attention, as this rare condition requires urgent treatment to prevent permanent damage [3]. Similarly, sudden vision or hearing loss, though extremely rare, warrants discontinuation of sildenafil and prompt medical review. Our clinical team at Cured Pharmacy remains available to address any concerns about side effects or treatment response.

How to Order Viagra 100mg or Generic Sildenafil from Cured Pharmacy

Ordering sildenafil through Cured Pharmacy begins with a free online consultation that takes under three minutes to complete. You'll answer questions about your medical history, current medications, cardiovascular health, and erectile dysfunction symptoms. This information is reviewed by a UK-registered prescriber — part of our clinical team overseen by Superintendent Pharmacist Tarun Kumar (GPhC 2233073) — who determines whether sildenafil is safe and appropriate for you.

If approved, your prescription is dispensed by our GPhC-registered pharmacy (registration number 9012511) using genuine UK-licensed medications sourced from approved wholesalers. We offer discreet packaging with no external markings indicating the contents, and delivery typically arrives within two to three working days via Royal Mail or courier service. You'll see transparent pricing before completing your consultation, with no hidden fees or mandatory subscriptions.

Should your prescriber determine that sildenafil is not suitable based on your medical assessment, they may suggest alternative treatments or recommend you consult your NHS GP for further evaluation. This clinical safeguarding ensures you receive appropriate, safe treatment tailored to your individual health profile. Starting your assessment takes just minutes, and our team is available on (+44) 116 4646009 if you have questions about the process.

Scientific References

  1. Hatzimouratidis, K., et al. (2010). Guidelines on Male Sexual Dysfunction: Erectile Dysfunction and Premature Ejaculation. European Association of Urology. European Urology, 57(5), 804–814. https://doi.org/10.1016/j.eururo.2010.02.020 [accessed 8 August 2026]
  2. Medicines and Healthcare products Regulatory Agency. (2020). Bioequivalence and Generic Medicines: Guidance for Industry. GOV.UK. https://www.gov.uk/guidance/generic-medicines [accessed 8 August 2026]
  3. Goldstein, I., et al. (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 8 August 2026]
  4. Morales, A., et al. (1998). Clinical Safety of Oral Sildenafil Citrate (VIAGRA) in the Treatment of Erectile Dysfunction. International Journal of Impotence Research, 10(2), 69–74. https://doi.org/10.1038/sj.ijir.3900354 [accessed 8 August 2026]
  5. National Health Service. (2022). Sildenafil (including Viagra) – NHS. NHS.UK. https://www.nhs.uk/medicines/sildenafil-viagra/ [accessed 8 August 2026]
  6. Porst, H., et al. (2003). The Efficacy and Tolerability of Vardenafil, a New, Oral, Selective Phosphodiesterase Type 5 Inhibitor, in Patients with Erectile Dysfunction: The First At-Home Clinical Trial. International Journal of Impotence Research, 15(4), 240–252. https://doi.org/10.1038/sj.ijir.3901012 [accessed 8 August 2026]
  7. NHS. (2026). Erectile dysfunction (impotence). https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ Accessed 8 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

Is generic sildenafil as effective as branded Viagra 100mg?
Yes. Generic sildenafil contains the identical active ingredient at the same 100mg strength and must meet MHRA bioequivalence standards, ensuring identical clinical efficacy to branded Viagra. For those seeking the cheapest viagra 100mg branded vs generic uk, generic sildenafil is the most cost-effective option without compromising effectiveness.
How much does Viagra 100mg cost in the UK?
The cheapest viagra 100mg branded vs generic uk is generic sildenafil 100mg, starting from £0.45 per tablet at Cured Pharmacy, whilst branded Viagra carries premium pricing. Both require a prescription following clinical assessment by a UK prescriber.
Can I buy Viagra 100mg without a prescription in the UK?
No. Sildenafil 100mg is a prescription-only medication in the UK and requires clinical assessment by a registered prescriber to ensure safe, appropriate use based on your medical history.
What's the difference between Viagra 100mg and 50mg?
The 100mg dose contains twice the sildenafil content of the 50mg tablet and is typically prescribed when lower doses prove insufficient. Your prescriber will determine the appropriate starting dose during your consultation.
How long does sildenafil 100mg take to work?
Sildenafil typically begins working within 30 to 60 minutes when taken on an empty stomach, with effects lasting four to five hours. High-fat meals can delay onset by up to one hour.
Which is better: Viagra 100mg or Cialis (tadalafil)?
Both are effective PDE5 inhibitors, but tadalafil offers longer duration (up to 36 hours) whilst sildenafil works faster with a shorter window. Your prescriber can help determine which suits your lifestyle and preferences best.
What are the side effects of Viagra 100mg?
Common side effects include headache (16% of users), facial flushing (10%), and indigestion (7%). These are typically mild and transient, resolving within hours as the medication clears your system.
Can I take sildenafil 100mg with alcohol?
Moderate alcohol consumption is unlikely to affect sildenafil's efficacy, but excessive drinking can impair erectile function and increase the risk of side effects like dizziness or low blood pressure. Limiting alcohol intake optimises treatment outcomes.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Reviewed on: June 03, 2026

Last reviewed: 07 August 2026

Last updated on 07 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 07 August 2026

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

Current version (07 August 2026)

Edited by: The Editorial Team

Medically reviewed by:

Tarun Kumar, GPhC No. 2233073, Prescribing Pharmacist


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