Sildenafil Online: How to Get It, What It Costs and How to Buy Safely

• Sildenafil is a prescription only medicine in the UK, so getting it online always involves a clinical assessment
• GPhC guidance states there "should always be a means of having two-way communication between the person and the prescriber for all online prescribing"
• Generic sildenafil 50mg is £3.99 for 4 tablets at EveryDayMeds, which is £1.00 per tablet, a standard price
• A pharmacy's GPhC registration number can be checked on the regulator's own register rather than taken on trust

Getting sildenafil online in the UK means completing a consultation with a registered pharmacy, having a UK registered prescriber review it, and receiving the medicine only if treatment is judged appropriate for you.

That much is straightforward. The harder question, and the one this page is built around, is how you tell a supplier worth using from one that is not. Sildenafil is among the most counterfeited categories of medicine sold online, and the sites that operate outside the rules look, at a glance, much like the ones that do not.

So this page does three things. It sets out how the legitimate route works and what it costs, using verified prices. It gives you a five point test you can apply to any supplier in about two minutes. And it explains what words like genuine, safest and same day actually mean when a site uses them, because those are the words that do the most work and get checked the least. Results vary between individuals.

Start Your Free Assessment

Key things to know

• Sildenafil is licensed in the UK at 25mg, 50mg and 100mg for erectile dysfunction in men aged 18 and over.
• Supply without a prescription is unlawful, apart from one specific 50mg product reclassified by the MHRA in November 2017.
• GPhC guidance says a prescriber "cannot base prescribing decisions on the information provided in an online questionnaire alone".
• All pharmacies in Great Britain, including internet ones, must be registered with the GPhC and meet its standards.
• A registered pharmacy must prominently display its registration number and its name and physical address.
• EveryDayMeds is a GPhC registered distance selling pharmacy, registration 9012878, operated by OVIO Ltd.
• MHRA seized more than 15.5 million doses of illegally traded medicines in 2023, naming erectile dysfunction products among the categories.
• Same day usually refers to dispatch, not delivery, and the two are different things.
• Suspicious online sellers can be reported to the MHRA, and suspect medicines through the Yellow Card scheme.
• Sildenafil works by increasing blood flow to the penis, helping to maintain an erection during physical stimulation.
• The active ingredient sildenafil citrate is the same in both generic sildenafil and branded versions like Viagra.
• Sildenafil dosages available in the UK include 25mg, 50mg, and 100mg, and the prescribed dose depends on individual needs.
• Avoid grapefruit juice when taking sildenafil as it can affect how sildenafil works and increase the risk of side effects.
• Sildenafil is a prescription only medication due to potential interactions with other medicines, including decongestant nasal sprays and nitrates.
• Side effects of sildenafil can include facial flushing, hot flushes, headaches, and in rare cases blurred vision or allergic reactions.
• Sildenafil alternatives include tadalafil, vardenafil, and non-medical options such as penis pumps and lifestyle changes.
• Conditions like high blood pressure, low blood pressure, sickle cell anaemia, multiple myeloma, and stomach ulcers may affect suitability for sildenafil treatment.
• Psychological factors and Peyronie's disease can also contribute to erectile function difficulties and may require different treatment approaches.
• Sildenafil affects blood vessels by relaxing them to increase flow to the penis, but it requires sexual stimulation to be effective.
• Drinking too much alcohol while taking sildenafil can reduce effectiveness and increase side effects.

How to get sildenafil online in the UK

To get sildenafil online you complete a health consultation, a UK registered prescriber reviews it, and the pharmacy dispenses only if treatment is approved.

1. Complete a consultation covering your medical history, current medicines, blood pressure and heart health
2. A UK registered prescriber reviews it and decides whether treatment is appropriate, and at which strength and quantity
3. If approved, the pharmacy dispenses and dispatches, with a patient information leaflet and a dispensing label

You do not need to have seen a GP first and you do not need an existing prescription. What you cannot do is skip the assessment, because it is the assessment that decides whether anything is supplied.

Searches for this arrive in many shapes, including sildenafil online uk and the common misspacing sildenafil on line. The route is the same whichever way it is typed.

Sildenafil online prescription UK: the legal position

Sildenafil is a prescription only medicine in the UK. A sildenafil online prescription follows an assessment, it does not precede one, and it cannot be bought around.

There is one narrow exception. In November 2017 the MHRA reclassified a single sildenafil 50mg product from prescription only medicine to pharmacy medicine, and it is sold from pharmacies after a pharmacist consultation, subject to exclusions covering severe cardiovascular disorders, high cardiovascular risk, liver failure, severe kidney failure and certain interacting medicines.

Searches for sildenafil online without prescription are usually looking for speed or privacy rather than illegality, and both are available on the lawful route. What is not available is a supply nobody has assessed. MHRA puts the risk plainly: "Buying medicines from unverified sources, online or elsewhere, means there is no guarantee that the products are safe or effective."

Sildenafil online doctor: who actually reviews your consultation

A UK registered prescriber, who may be a doctor or may be a pharmacist, nurse or other independent prescriber.

Searches for a sildenafil online doctor assume the reviewer must be a doctor. Often they are, but GPhC guidance refers to Pharmacist Independent Prescribers and to "non-medical independent prescriber, for example a pharmacist, nurse or physiotherapist". These clinicians prescribe on their own professional registration and their own judgement.

That is why accurate services describe the reviewer as a UK registered prescriber rather than naming one profession. The broader phrase is the truthful one.

What matters is not the job title but whether a real clinical decision is being made. GPhC guidance is unusually direct here: a prescriber "cannot base prescribing decisions on the information provided in an online questionnaire alone", and must instead be able to verify information through timely two-way communication, access to clinical records, or contact with the person's GP.

Start Your Free Assessment

What sildenafil costs online

Generic sildenafil at EveryDayMeds ranges from £0.84 to £1.12 per tablet, depending on strength and pack size. These are standard prices, quoted before any code or offer, with every per tablet figure calculated from the pack price.

Three things in that table are worth noticing, because they run against what people assume.

The largest pack does not give the smallest per tablet figure. At 50mg the 32 tablet pack is £0.84 while the 48 is £0.97. Compare price divided by tablets rather than assuming volume wins.

At 48 tablets, 50mg and 100mg cost the same. That is a pricing structure, not a clinical signal, and it is not a reason to ask for a higher strength. Which strength is appropriate is decided at assessment.

Sildenafil tablets online and sildenafil citrate online are the same purchase. Sildenafil citrate is the salt form in the tablet, sildenafil is what the stated strength refers to. Whether you buy sildenafil 50mg online, sildenafil 100mg online, or search sildenafil 100mg buy online, sildenafil tablet buy online or sildenafil tablets online uk, you are looking at the same medicine.

Searches for sildenafil online cheap deserve a straight answer about what actually reduces cost: choosing generic over branded, comparing per tablet rather than per pack, and checking whether delivery is charged separately. At EveryDayMeds there is no separate delivery charge on standard orders. Prices are standard prices and may change. Cost is not a basis on which to choose a strength.

Safest place to buy sildenafil online: a five point test

There is no register of "safest" suppliers, and any site claiming to be the safest is making a claim it cannot support. What exists instead is a set of checks you can run yourself, and they take about two minutes.

Searches for the safest place to buy sildenafil online are really asking for a way to tell. Here it is, and any sildenafil online pharmacy UK residents are considering should pass all five.

1. Is a GPhC registration number displayed, with the pharmacy's name and physical address? GPhC guidance requires a registered pharmacy website to display these prominently. EveryDayMeds is a GPhC registered distance selling pharmacy, registration 9012878, operated by OVIO Ltd
2. Does that number check out on the regulator's own register? All pharmacies in Great Britain, including internet ones, must be registered with the GPhC. A number displayed on a site proves nothing until you look it up
3. Is there an assessment before supply, and can it decline you? A service that cannot say no is not assessing anything
4. Can you reach a prescriber? See below, because this is the check almost nobody runs
5. Do any of the MHRA warning signs apply? Among them: an unusual web address using a product name in the URL, exaggerated claims such as "100% safe" or "no side effects", no prescription required for prescription medicines, payment accepted in cryptocurrencies, being asked not to name the medicine in your banking reference, and no physical address available

A site that fails point one or point three does not need the other three checks.

The two way communication test

GPhC guidance states that there "should always be a means of having two-way communication between the person and the prescriber for all online prescribing."

Read the scope of that: all online prescribing, not just high risk categories. It means a supplier should give you a route back to a clinician, not only a route to customer service.

This is the most useful check on the list precisely because it is the one that is hardest to fake. A site can copy a registration number graphic. It cannot easily manufacture a prescriber willing to answer a clinical question. When the GPhC consulted on this, 94% of patients said they expected the option of direct contact with the prescriber.

Genuine sildenafil online: what genuine actually means

Genuine means the medicine came through a regulated supply chain, dispensed by a registered pharmacy against a prescription. It does not mean the tablet looks a particular way.

This distinction matters more than almost anything else on this page. Searches for genuine sildenafil online usually expect an answer about appearance: what colour, what shape, what markings. Appearance cannot answer the question, for two reasons.

First, sildenafil is made by many authorised manufacturers, and colour, shape and markings vary between them because inactive ingredients are not standardised. A tablet looking unfamiliar is normal.

Second, a falsified product is manufactured specifically to look genuine. The better the fake, the less its appearance tells you.

MHRA lists these as signs of a falsified medicine, and note that none of them is the tablet's colour or shape:

• Poor quality capsules or crumbly tablets
• A homemade appearance, or packaging that is open or damaged
• Packaging missing the "UK Only" label
• Active ingredients not listed on the packet
• A missing patient information leaflet
• A missing or past expiry date

The scale of the problem is documented. MHRA seized more than 15.5 million doses of illegally traded medicines in 2023, with a street value of more than £30 million, and described the seizures as including "falsified and unlicensed lifestyle products such as erectile dysfunction and hair loss medications". Between December 2024 and May 2025 it seized a further 7.7 million doses and removed 367 websites and social media accounts.

Start Your Free Assessment

How does sildenafil work?

Sildenafil works by relaxing blood vessels to increase blood flow, particularly in the lungs for pulmonary arterial hypertension and in the penis to treat difficulties achieving or maintaining an erection. It belongs to a group of medicines called phosphodiesterase type-5 (PDE-5) inhibitors, which block an enzyme that restricts blood flow. This mechanism enhances the natural process that occurs when a person is physically stimulated or aroused, allowing for an effective treatment for erectile dysfunction.

Sildenafil and alcohol

While you can drink alcohol while taking sildenafil, it is advisable to limit intake. Drinking alcohol can reduce the medication’s effectiveness and increase the likelihood of side effects such as dizziness or headaches. Excessive alcohol consumption may also contribute to stopping intimacy early or cause a painful erection. For optimal results, avoid drinking alcohol or consume only small amounts when using sildenafil.

Sildenafil dosage and generic versions

Sildenafil is available in 25mg, 50mg, and 100mg doses, with the appropriate strength determined by a healthcare professional after assessment. The generic form of sildenafil contains the same active ingredient as branded versions like Viagra and works in exactly the same way. Choosing a generic version is often a more affordable option, offering sildenafil cheaper without compromising effectiveness.

Other medications and non medical alternatives

If sildenafil is not suitable, other medications such as tadalafil, vardenafil, and avanafil (Spedra) are available. These PDE-5 inhibitors differ in how long they last and how quickly they work. Non medical alternatives include lifestyle changes, therapy for psychological factors, and devices like penis pumps that improve blood flow without medication.

Pulmonary arterial hypertension and sildenafil

Besides treating erectile dysfunction, sildenafil is prescribed for pulmonary arterial hypertension, a condition characterised by high blood pressure in the arteries of the lungs. It helps relax these blood vessels, improving exercise capacity and symptoms.

Sildenafil FAQs

For more detailed information, see our sildenafil faqs section which covers common questions about how to take sildenafil, interactions with other medications, side effects, and guidance on safe use.

Sildenafil online reviews: how to weigh them

Reviews tell you about service and almost nothing about clinical safety, and it is worth separating the two before you rely on them.

What sildenafil online reviews can genuinely tell you: whether orders arrive, whether packaging is discreet, whether someone answers when contacted, whether the process was clear. Those are real and useful.

What they cannot tell you: whether the assessment was appropriate, whether the medicine came through a regulated chain, or whether a prescriber would have declined someone who should have been declined. A smooth experience and a safe one are not the same thing. A service that supplies without assessing will generate excellent reviews from people who wanted exactly that.

There is also a structural problem with reviews of any treatment. People who are delighted and people who are frustrated both tend to write something, while people for whom treatment quietly became routine mostly do not. That skews what gets published toward both extremes and away from the middle, where most experiences sit.

The published evidence is a better guide to what a medicine does, because it has a denominator. In the trial data MHRA records, 74% of men taking sildenafil 50mg reported an improvement in their erections, against 25% of men on placebo, across studies enrolling more than 8,000 patients. That figure relates to 50mg specifically and is not transferable to another strength.

Use reviews for logistics. Use the regulator for safety. Use the evidence for what to expect.

Sildenafil online same day: what same day actually covers

Same day almost always means same day dispatch, not same day delivery, and the difference is the whole answer.

At EveryDayMeds, a consultation completed before 3pm on a working day is reviewed and dispatched the same day. Delivery is the next working day after dispatch, with no separate charge on standard orders. Saturday delivery is £14.99 and requires approval by 3pm on Friday. There is no dispatch on Saturdays, Sundays or English public and bank holidays.

One caution belongs with the speed question. MHRA lists "promises of quick next day delivery" among the warning signs of a site not operating legitimately. That is not a contradiction of the timings above. The warning is about speed promised instead of assessment. Fast dispatch after a prescriber has approved treatment is ordinary pharmacy logistics.

So the question to ask a supplier is not how fast they deliver. It is what happens before they dispatch. Delivery options, charges and cut off times are as published at the time of writing and can change.

Start Your Free Assessment

What to do if something looks wrong

If you suspect a medicine is not genuine, MHRA advice is not to take it. Keep the packaging, batch number and expiry date, seek medical help right away if you have taken it and feel unwell, and report it through the MHRA Yellow Card scheme.

If a seller looks illegitimate, the MHRA operates a service for reporting suspicious online sellers of medicines and medical devices. Reporting is how the enforcement figures above get generated.

If you have concerns about a registered pharmacy, the GPhC accepts reports of concerns directly.

If the prescriber declines you, nothing is dispensed and that is the assessment working. Ask what the reason was, because some are addressable, such as an uncontrolled blood pressure reading or a medicine that needs reviewing first.

When to seek urgent help

• An erection lasting longer than 4 hours needs immediate medical attention
• Sudden loss of vision in one or both eyes, or sudden loss or reduction of hearing, means stopping the medicine and being seen urgently
• Chest pain during or after use is an emergency, and you must say that you have taken sildenafil, because nitrates must not be given
• Fainting or collapse needs assessment

Sildenafil must never be combined with nitrates, nitric oxide donors or riociguat. Never take more than one tablet in any 24 hour period, and never take two tablets of a lower strength to make a higher one. Treatment suitability depends on an individual clinical assessment, and your prescriber will determine the appropriate treatment.

Medical Disclaimer

This article is for general information only and is not medical advice. It does not replace an assessment by a qualified healthcare professional. Treatment suitability depends on an individual clinical assessment. Your prescriber will determine the appropriate treatment. This medicine should only be used under the supervision of an appropriately qualified prescriber. Results vary between individuals.

Nothing here instructs you to take a particular strength, quantity or frequency, or to change an existing regimen, and there is no dose escalation plan on this page. The guidance here does not replace the instructions on your dispensing label or in the patient information leaflet supplied with your pack, and where they differ you should follow your prescriber and your leaflet.

Nothing on this page is a route to obtaining sildenafil without an assessment. Sildenafil is a prescription only medicine in the UK and supply without a prescription, outside the single reclassified pharmacy product described, is unlawful. The checks set out here are a practical guide based on published regulatory requirements. They are indicators rather than a complete test, passing them does not certify any supplier, and no ranking or endorsement of suppliers is made or implied anywhere on this page.

Regulatory requirements are quoted from GPhC guidance for registered pharmacies providing pharmacy services at a distance, including on the internet. Warning signs, seizure figures and the efficacy data are as published by the MHRA. The efficacy figure of 74% against 25% on placebo relates to sildenafil 50mg in the studies MHRA records and is not transferable to another strength. Prices quoted are standard prices at the time of writing, taken from the live product listings, shown per pack and per tablet, calculated from the pack price, and are not promotional or first order prices. Delivery options, charges, cut off times, dispatch days, contact details and registration details are as published at the time of writing and are subject to change.

Do not start, stop or change the strength or frequency of any prescribed medicine because of this page. Never take more than one tablet in any 24 hour period, and never take two tablets of a lower strength to make a higher one. Never combine sildenafil with a nitrate, a nitric oxide donor or riociguat. Suspected side effects and suspected fake or defective medicines can be reported through the MHRA Yellow Card scheme. Seek immediate medical help for an erection lasting longer than 4 hours, chest pain, fainting, or sudden loss of vision or hearing.