Cenforce 100 and 200: why these sildenafil tablets are not licensed in the UK
Reviewed by the My London Pharmacy clinical team
·21 October 2026
·7 min read
·Reviews on Trustpilot
Quick answer
Cenforce is sildenafil, the medicine in Viagra, made by an Indian manufacturer and sold to UK customers without a licence or a prescription. The 150 mg and 200 mg versions exceed the UK maximum dose, and the tablets are never checked by the UK regulator. Licensed sildenafil tablets from a registered UK pharmacy contain the same drug at a dose chosen for you.
What Cenforce is and where it comes from
Cenforce is one of several Indian sildenafil brands that have found a market among UK men looking for a cheaper route to erectile dysfunction treatment. It is made by Centurion Laboratories in Gujarat and sold as sildenafil citrate tablets in a wide range of strengths: 25, 50, 100, 120, 150 and 200 mg. The range also includes Cenforce Professional, a tablet dissolved under the tongue, Cenforce Soft, a chewable version, Cenforce D, which combines sildenafil with the premature ejaculation medicine dapoxetine, and Cenforce FM, marketed to women even though sildenafil has no UK licence for any use in women.
Centurion holds registrations for some of these products in India. That registration has no standing in the UK. A medicine sold here must have a marketing authorisation from the Medicines and Healthcare products Regulatory Agency (MHRA), and Cenforce does not. In UK terms it is an unlicensed imported prescription medicine, and the websites selling it are not pharmacies.
The legal position in the UK
Sildenafil is a prescription-only medicine in the UK. The one exception is Viagra Connect, a 50 mg tablet reclassified in 2018 so that a pharmacist can supply it after a short conversation. Every other sildenafil product, including licensed generic sildenafil tablets, requires a prescription from a registered prescriber.
A website sending Cenforce to a UK address without a prescription is therefore committing two offences under the Human Medicines Regulations 2012: supplying a prescription-only medicine without a prescription, and supplying a product with no UK authorisation. The MHRA seizes these shipments and closes the sites when it can. Possession for personal use is not an offence, which is why sellers describe the product as legal, but nothing about the supply chain is. If something goes wrong, there is no pharmacist, prescriber or manufacturer answerable to you.
Cenforce 100, 150 and 200: the dose problem
The number after the name is the sildenafil content in milligrams, and it is where Cenforce departs furthest from how the medicine is meant to be used. Licensed sildenafil comes in 25 mg, 50 mg and 100 mg. Most men start on 50 mg; the dose is reduced to 25 mg if side effects are troublesome or increased to 100 mg if the response is inadequate, and 100 mg once in 24 hours is the ceiling. There is no licensed 120, 150 or 200 mg sildenafil tablet in the UK, the EU or the United States.
That ceiling is not arbitrary. The original dose-ranging studies found that going above 100 mg produced little extra benefit and noticeably more headache, flushing, visual disturbance and drops in blood pressure. Sites selling Cenforce 150 and 200 present them as options for men who were disappointed by 100 mg. A clinician would instead look at timing, food, alcohol, anxiety, underlying health and whether a different medicine such as tadalafil would suit better. Doubling a dose that is already at its maximum is not a treatment plan.
What is actually in the tablet
With a licensed medicine the answer is known: the factory is inspected, each batch is tested against a specification, and the product is tracked through a regulated supply chain. With Cenforce bought online none of that applies. The blister pack might contain a genuine Centurion tablet, a copy made somewhere else and packaged to look like one, or something unrelated.
When the MHRA tests seized erectile dysfunction tablets it regularly finds products with far more or far less sildenafil than the label claims, products containing a different drug entirely, and products padded with materials such as talc, plaster, paint and printer ink. The packaging is frequently a faithful copy of the real thing. Because you cannot see the supply chain, you cannot tell which kind you have received.
The risks a consultation would have caught
Sildenafil is a well-tolerated medicine for most men when it is prescribed properly. The consultation exists because a handful of situations make it dangerous, and they are not rare in the age group most likely to need it.
- Nitrates and poppers. GTN spray, isosorbide mononitrate and other nitrate medicines, and recreational amyl nitrite, can combine with sildenafil to cause a severe fall in blood pressure.
- Riociguat and alpha blockers. Riociguat rules sildenafil out altogether; alpha blockers for prostate or blood pressure need careful spacing and a lower dose.
- Recent heart attack or stroke, unstable angina, severe heart failure. Sexual activity itself is exertion, and sildenafil is not advised until a clinician has assessed you.
- Certain eye conditions, severe liver disease, and medicines such as some antifungals, antibiotics and HIV treatments that raise sildenafil levels and call for a lower dose.
A prescriber covers all of this in minutes. A Cenforce website does not ask. The man most at risk from an unchecked 200 mg tablet is exactly the man the questions were written for. Erectile dysfunction is also commonly the first sign of cardiovascular disease or diabetes, so skipping the assessment can mean missing the cause as well as mistreating the symptom.
The licensed alternative costs little more
The cheap-import trade grew up when Viagra was under patent and expensive. That ended in 2013. Licensed generic sildenafil is now one of the least expensive prescription medicines a UK pharmacy dispenses, and the difference between it and an unlicensed import is small in money and large in everything else. Licensed sildenafil from My London Pharmacy is MHRA-authorised, dispensed by a GPhC-registered pharmacy, and supplied after an online consultation reviewed by a UK prescriber, with 25 mg, 50 mg and 100 mg available where appropriate.
You get a tablet from an inspected supply chain, a dose chosen for you, a prescriber who has checked your medicines and history, and a pharmacist to contact if you have questions or side effects. If sildenafil is not right for you, you get advice on alternatives such as tadalafil rather than a bigger tablet. If you would rather avoid a consultation altogether, Viagra Connect 50 mg from a pharmacy is the only legal prescription-free route to sildenafil in the UK.
How to recognise an unregulated seller
A few checks separate a legitimate UK online pharmacy from a site reselling imported stock. Every UK online pharmacy is registered with the General Pharmaceutical Council, and its registration number and superintendent pharmacist should be easy to find and verifiable on the GPhC register. Prescription medicines are only supplied after a consultation; a site that lets you put a prescription-only medicine straight into a basket is not operating lawfully. Licensed sildenafil comes in 25, 50 and 100 mg, so any 120, 150 or 200 mg tablet is unlicensed by definition. Brand names such as Cenforce, Kamagra, Vidalista, Fildena and Suhagra are all unlicensed imports. Prices far below the UK market, bulk deals and shipping from overseas complete the picture.
If you have taken Cenforce and develop chest pain, fainting, an erection lasting more than four hours, or sudden loss of vision or hearing, seek urgent medical help and say exactly what you took. If you have used it without problems, the sensible next step is a proper consultation so you can move to a licensed supply with a known dose. Our clinicians can review your history and discuss which licensed option suits you.
Frequently asked questions
What is Cenforce?
Cenforce is a brand of sildenafil citrate made by Centurion Laboratories in India. It is sold in strengths from 25 mg to 200 mg, plus chewable, sublingual and dapoxetine-combination versions. None of them holds a UK marketing authorisation.
Is Cenforce legal in the UK?
It is not legal to sell Cenforce in the UK. Sildenafil is a prescription-only medicine here apart from Viagra Connect 50 mg from a pharmacy, and Cenforce has no UK licence, so sites supplying it to UK customers are breaking medicines law.
Is Cenforce 100 the same as sildenafil 100 mg?
It is labelled as 100 mg sildenafil, but only licensed UK sildenafil is manufactured and tested under MHRA oversight. With Cenforce nobody in the UK has verified what the tablet contains.
Is Cenforce 200 dangerous?
No regulator has approved a 200 mg sildenafil dose. The UK maximum is 100 mg in 24 hours. Doubling it raises the risk of low blood pressure, visual disturbance, fainting and prolonged erections without a reliable gain in effect.
What should I use instead?
Licensed sildenafil tablets from a GPhC-registered pharmacy after a short online consultation, or Viagra Connect 50 mg from a pharmacy. Both give you sildenafil of known strength from an inspected supply chain.