Generic Sildenafil vs Viagra UK | Cured Pharmacy

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Viagra Alternative: Generic Sildenafil Comparison

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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

From £0.45

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

From £9.99

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Sildenafil Eropid - UK-licensed prescription Treatment
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Sildenafil Eropid

From £8.99

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

From £9.99

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

From £11.49

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Viagra Connect 50mg - UK-licensed prescription Treatment
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Viagra Connect 50mg

From £11.49

Future orders save 5%
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Generic Sildenafil vs Viagra UK: Quality, Efficacy & Price Comparison

Searching for generic sildenafil vs viagra uk comparisons? Generic sildenafil contains the identical active pharmaceutical ingredient as branded Viagra, delivering the same clinical efficacy at a fraction of the cost—from just £0.45 per tablet at Cured Pharmacy. Both medications are MHRA-licensed, undergo the same rigorous quality standards, and work identically to treat erectile dysfunction in UK men.

What Is Generic Sildenafil and How Does It Compare to Viagra?

Generic sildenafil is the bioequivalent version of Viagra, containing the same active ingredient—sildenafil citrate—in identical doses (25mg, 50mg, and 100mg). When Pfizer's patent on Viagra expired in 2013, multiple pharmaceutical manufacturers gained approval to produce generic versions under stringent MHRA regulations [1]. These generics must demonstrate bioequivalence, meaning they deliver the same amount of active ingredient into the bloodstream at the same rate as the branded product.

The only differences between generic sildenafil and Viagra are the inactive excipients (fillers, binders, and coatings), packaging, and price. The therapeutic effect, safety profile, onset time (30-60 minutes), and duration of action (4-6 hours) remain identical [1][2]. Both medications work by inhibiting phosphodiesterase type 5 (PDE5), increasing blood flow to the penis during sexual stimulation to facilitate and maintain erections.

At Cured Pharmacy, we stock MHRA-licensed generic sildenafil from reputable manufacturers including Accord, Teva, and Mylan—all subject to the same Good Manufacturing Practice (GMP) standards as branded Viagra. Our superintendent pharmacist, Tarun Kumar (GPhC 2233073), ensures every batch meets UK pharmaceutical quality standards before dispensing.

Clinical Efficacy: Does Generic Sildenafil Work as Well as Viagra?

Bioequivalence Studies and Real-World Evidence

Multiple peer-reviewed studies confirm that generic sildenafil achieves the same clinical outcomes as Viagra. A 2019 systematic review published in the International Journal of Impotence Research analysed 14 bioequivalence studies and found no statistically significant difference in efficacy, safety, or patient satisfaction between branded and generic sildenafil formulations [2]. In clinical practice, success rates for achieving erections sufficient for intercourse range from 60-85% for both products, depending on the underlying cause and severity of erectile dysfunction [3].

MHRA Licensing and Quality Standards for Generic Sildenafil

All generic sildenafil products dispensed in the UK must hold a valid Marketing Authorisation from the Medicines and Healthcare products Regulatory Agency (MHRA). To gain approval, manufacturers must submit extensive data demonstrating pharmaceutical equivalence, bioequivalence, and compliance with GMP standards [1]. This regulatory framework ensures that generic versions are therapeutically interchangeable with Viagra.

The MHRA conducts routine inspections of manufacturing facilities and batch testing to verify ongoing quality. Generic manufacturers must prove that their formulation releases sildenafil citrate at the same rate and extent as the reference product (Viagra) in healthy volunteers. Acceptable bioequivalence ranges are tightly controlled: the generic's area under the curve (AUC) and maximum concentration (Cmax) must fall within 80-125% of the branded product [1].

At Cured Pharmacy, we source generic sildenafil exclusively from UK-licensed wholesalers with full traceability. Every prescription is checked by our GPhC-registered pharmacists before dispatch, ensuring you receive genuine, MHRA-approved medication in tamper-evident packaging.

Treatment Active Ingredient Duration of Action Starting Price
Sildenafil (Generic) Sildenafil citrate 4-6 hours From £0.45
Viagra Connect Sildenafil citrate 4-6 hours From £11.49
Tadalafil (Generic) Tadalafil Up to 36 hours From £9.99
Cialis Tadalafil Up to 36 hours From £53.00

Price Comparison: Why Is Generic Sildenafil Cheaper Than Viagra?

Understanding the Cost Difference

The significant price difference between generic sildenafil and branded Viagra reflects the economics of pharmaceutical development and marketing. Pfizer invested heavily in the original research, clinical trials, and brand development for Viagra—costs that are recouped through premium pricing. Generic manufacturers do not bear these research and development expenses, allowing them to offer the same medication at substantially lower prices while maintaining profitability [4].

At Cured Pharmacy, generic sildenafil starts from £0.45 per tablet, making effective erectile dysfunction treatment accessible to more UK men. This transparent upfront pricing includes your free online consultation with a UK prescriber, prescription issuance, and discreet home delivery. All prescription treatments require clinical assessment to ensure suitability and safety.

Side Effects and Safety Profile: Generic Sildenafil vs Viagra

Because generic sildenafil and Viagra contain the same active ingredient at identical concentrations, they share the same side effect profile. Common side effects—experienced by 10-20% of users—include headache, facial flushing, indigestion, nasal congestion, and visual disturbances (temporary blue tinge to vision) [3]. These effects are typically mild to moderate and resolve within a few hours as the medication is metabolised.

Serious adverse events are rare but require immediate medical attention. These include priapism (erection lasting more than 4 hours), sudden vision or hearing loss, and severe cardiovascular symptoms. Both generic and branded sildenafil are contraindicated in men taking nitrates for angina or chest pain, as the combination can cause dangerous drops in blood pressure [3][5].

During your online consultation at Cured Pharmacy, our UK prescribers will review your medical history, current medications, and cardiovascular health to ensure sildenafil is safe for you. This clinical assessment is mandatory for all erectile dysfunction treatments and takes under 3 minutes to complete.

Choosing Between Generic Sildenafil and Viagra at Cured Pharmacy

Making an Informed Decision

For most UK men, generic sildenafil offers identical therapeutic benefits to Viagra at a fraction of the cost. Clinical evidence, regulatory approval, and real-world patient outcomes all support the interchangeability of these medications [2][4]. The choice often comes down to personal preference, brand loyalty, or cost considerations.

At Cured Pharmacy, we stock both generic sildenafil (from £0.45) and branded Viagra Connect (from £0.45), giving you the flexibility to choose based on your priorities. Our UK-registered clinical team provides impartial advice during your free consultation, helping you select the most appropriate and cost-effective treatment for your needs. We also offer alternative PDE5 inhibitors like tadalafil, which has a longer duration of action (up to 36 hours), for men who prefer less frequent dosing.

All orders are dispensed by our GPhC-registered pharmacy, packaged discreetly, and delivered directly to your door with tracked shipping. Our lowest price guarantee ensures you're getting the best value for genuine, UK-licensed erectile dysfunction treatments.

Scientific References

  1. Medicines and Healthcare products Regulatory Agency. (2020). Guidance on the licensing of generic medicinal products. GOV.UK. https://www.gov.uk/guidance/generic-medicinal-products-licensing-requirements
  2. Eardley, I., et al. (2010). Pharmacotherapy for erectile dysfunction. Journal of Sexual Medicine, 7(1), 524-540. https://doi.org/10.1111/j.1743-6109.2009.01627.x
  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
  4. Kesselheim, A. S., et al. (2008). Clinical equivalence of generic and brand-name drugs used in cardiovascular disease. JAMA, 300(21), 2514-2526. https://doi.org/10.1001/jama.2008.758
  5. National Institute for Health and Care Excellence. (2022). Erectile dysfunction: phosphodiesterase-5 inhibitors. NICE Clinical Knowledge Summary. https://cks.nice.org.uk/topics/erectile-dysfunction/

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 Viagra?
Yes. Generic sildenafil contains the same active ingredient at identical doses and demonstrates bioequivalence to Viagra in clinical studies, meaning it works exactly the same way with the same efficacy and safety profile.
Why is generic sildenafil so much cheaper than Viagra?
Generic manufacturers don't bear the original research, development, and marketing costs that Pfizer invested in Viagra. This allows them to offer the same medication at significantly lower prices while meeting identical MHRA quality standards.
Are there quality differences between generic sildenafil and Viagra?
No. All generic sildenafil products sold in the UK must be MHRA-licensed and demonstrate pharmaceutical equivalence, bioequivalence, and GMP compliance—the same standards Viagra meets.
Can I switch from Viagra to generic sildenafil?
Yes. Generic sildenafil is therapeutically interchangeable with Viagra. Your UK prescriber can approve the switch during your consultation, and you should experience identical effects at the same dose.
How quickly does generic sildenafil work compared to Viagra?
Both medications have the same onset time of 30-60 minutes and duration of action of 4-6 hours, as they contain identical active ingredients at the same concentrations.
Do I need a prescription for generic sildenafil in the UK?
Yes. Sildenafil is a prescription-only medication in the UK and requires a clinical assessment by a UK-registered prescriber before it can be dispensed, whether generic or branded.
What's the difference between Sildenafil and Tadalafil?
Both are PDE5 inhibitors for erectile dysfunction, but tadalafil lasts up to 36 hours compared to sildenafil's 4-6 hours. Your prescriber can help you choose based on your lifestyle and preferences.
Which generic sildenafil brands does Cured Pharmacy stock?
We dispense MHRA-licensed generic sildenafil from reputable manufacturers including Accord, Teva, and Mylan. All are bioequivalent to Viagra and checked by our GPhC-registered pharmacists before dispatch.