Men’s Health Guide • The Care Pharmacy
A clear, cautious guide to the main ED treatments available in the UK, how they work, how they differ, and how to get assessed safely.
Erectile dysfunction (ED) is one of the most common reasons men in the UK seek medical help, and also one of the most under-discussed. It affects men of all ages, is rarely talked about openly, and is very often treatable. This guide sets out what ED is, when it’s worth seeking help, the main prescription treatments available, Sildenafil (generic Viagra), Viagra, Tadalafil (generic Cialis), Cialis, and Avanafil, how they compare, and what to check before buying any ED medicine online.
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Erectile dysfunction is common and usually treatable. In the UK, the main prescription options are PDE5 inhibitors: Sildenafil (from £5.99) and branded Viagra (from £29.99), Tadalafil (from £6.99) and branded Cialis (from £44.99, including a lower-dose daily option), and Avanafil (from £28.00), a faster-acting alternative. They all work in a similar way, by improving blood flow to the penis during sexual stimulation, but differ in how quickly they act and how long they last. None of these medicines are automatically suitable for everyone; a prescriber needs to review your health and current medicines before any of them can be prescribed.
Erectile dysfunction is the persistent difficulty getting or maintaining an erection firm enough for sexual activity. Occasional difficulty is common and not usually a cause for concern, but ongoing or worsening problems are worth discussing with a healthcare professional. ED can result from physical causes, such as reduced blood flow, hormonal changes, or nerve-related issues, psychological factors like stress, anxiety, or relationship difficulties, or, very often, a combination of both.
ED can also be an early warning sign of an underlying health condition. Because the same blood vessels affected in erectile dysfunction are also involved in cardiovascular health, ED sometimes appears before other symptoms of conditions such as high blood pressure, high cholesterol, or heart disease become obvious. This is one of the reasons a proper assessment matters, rather than simply treating the symptom in isolation.
ED becomes more common with age, but it is not an inevitable part of getting older, and it affects plenty of younger men too, often linked to stress, anxiety, or lifestyle factors rather than an underlying physical condition. Other contributing factors can include smoking, excess alcohol intake, obesity, poorly controlled diabetes, low testosterone, certain prescribed medicines, and pelvic surgery or injury. Because there are so many possible contributing factors, working through them with a prescriber, rather than assuming a single cause, gives you a much better chance of finding an approach that actually helps.
Important: This article is general information, not a diagnosis. Whether a specific ED treatment is suitable for you depends on your individual health, medical history, and current medicines, and must be confirmed by a prescriber.
Treatment may be worth considering if you’re experiencing ongoing difficulty achieving or maintaining an erection, particularly if this has persisted for several weeks or is affecting your confidence, relationships, or general wellbeing. As part of a consultation, a prescriber will typically ask about:
Lifestyle changes, such as stopping smoking, reducing alcohol intake, managing stress, and improving sleep, can sometimes help alongside or instead of medication, and a prescriber may discuss these too. Suitability for a specific medicine is always assessed individually rather than assumed.
It’s also worth seeking a routine assessment sooner rather than later if ED appears suddenly, is severe, or is accompanied by other new symptoms, such as chest discomfort, unusual fatigue, or changes in urination, since these patterns can sometimes point toward a health issue that benefits from earlier investigation. Bringing up ED with a healthcare professional, even briefly, is a normal and common part of many men’s health conversations, and prescribers are used to discussing it without judgement.
Short-acting, well established
From £5.99 (Sildenafil, generic) or £29.99 (branded Viagra). Usually works within 30–60 minutes, lasting around 4–6 hours. Sildenafil and Viagra contain the same active ingredient and work identically; Sildenafil is simply the more affordable generic version.
Long-acting
From £6.99 (Tadalafil, generic) or £44.99 (branded Cialis). Works within 30–60 minutes and can remain effective for up to 36 hours, offering more spontaneity. A lower-dose daily version (Cialis Daily, 2.5mg/5mg, from £22.95) is also available for continuous background support rather than as-needed use.
Fast-acting
From £28.00. One of the fastest-acting options, typically working within 15–30 minutes, with effects lasting up to 6 hours. Some men find it causes fewer side effects, though individual response varies.
All of these belong to a class of medicines called PDE5 inhibitors, which work by relaxing blood vessels in the penis, allowing more blood flow during sexual stimulation. None of them cause an automatic erection; sexual arousal is still required for any of them to work. Full clinical detail, including dosing, ingredients, and warnings, is available on the individual product pages: Sildenafil, Viagra, Tadalafil, Cialis, and Avanafil.
Choosing between the as-needed options and the daily Cialis option often comes down to how often you’re sexually active and how much you want treatment to fade into the background of your routine. As-needed tablets suit men who prefer to plan around specific occasions, while a daily low-dose tablet suits men who would rather not think about timing at all and are comfortable taking a tablet every day regardless of whether it’s needed that day. Both approaches are valid, and a prescriber can talk through which fits your circumstances better.
| Treatment | Price from | Onset | Duration |
|---|---|---|---|
| Sildenafil (generic) | £5.99 | 30–60 minutes | 4–6 hours |
| Viagra | £29.99 | 30–60 minutes | Up to 4 hours |
| Tadalafil (generic) | £6.99 | 30–60 minutes | Up to 36 hours |
| Cialis | £44.99 | 30–60 minutes | Up to 36 hours |
| Cialis Daily (2.5mg/5mg) | £22.95 | Continuous, once daily | Ongoing background effect |
| Avanafil | £28.00 | 15–30 minutes | Up to 6 hours |
Prices and product details were checked against The Care Pharmacy’s website at the time of writing and may change. Always confirm current pricing on the relevant product page before ordering.
All ED tablets covered here are prescription-only medicines (Viagra Connect is a lower-dose, pharmacist-supervised exception available without a full prescription for men who meet strict suitability criteria). A prescriber must assess your health before dispensing any of them. They are generally not suitable if you:
Always disclose your full medical history and current medicines during your consultation, including over-the-counter products and supplements, since interactions aren’t always obvious.
Some men also take more than one health condition into consideration when discussing ED treatment. For example, men managing benign prostatic hyperplasia (BPH), an enlarged prostate causing urinary symptoms, may find that Tadalafil, which is licensed for both ED and BPH, offers a practical option, since it can help address both concerns with a single, lower daily dose. This is exactly the kind of detail worth raising during your consultation rather than assuming which product applies to your situation.
Common side effects across these medicines include headache, flushing, indigestion, nasal congestion, and dizziness. These are usually mild and temporary.
Seek urgent medical attention if you experience: chest pain, sudden vision or hearing loss or changes, an erection lasting longer than four hours (priapism), or a severe allergic reaction. These require immediate medical attention and should not wait for a routine appointment.
If a medicine doesn’t seem to work the first time, it’s not unusual; some men need a few attempts, and sexual stimulation is still required for any of these medicines to have an effect. If it consistently doesn’t work, speak to your prescriber rather than increasing the dose yourself, since taking more than the prescribed amount does not improve results and increases the risk of side effects.
Alcohol and heavy meals can also affect how well these medicines work. Drinking to excess can make it harder to get or keep an erection and can increase the risk of dizziness or low blood pressure, while a large, high-fat meal shortly before taking a short-acting tablet can delay how quickly it starts working. None of this means occasional alcohol or food needs to be avoided entirely, but it’s worth bearing in mind if a dose doesn’t seem to work as expected.
ED medicines are among the most commonly counterfeited medicines sold online. Before buying, check that:
The MHRA Yellow Card scheme allows anyone to report suspected side effects or suspicious, falsified medicines, which is only useful if your medicine came from a legitimate pharmacy in the first place.
Be particularly cautious of websites offering ED medicines with no questions asked, unusually low prices compared to the rest of the market, or vague, unbranded packaging in photos. Genuine ED medicines dispensed by a UK pharmacy will always come with a patient information leaflet and clear labelling, and your pharmacy should be reachable if you have questions after your order arrives.
The Care Pharmacy is a GPhC-registered UK pharmacy with branches in Bradford (GPhC: 9010308) and Lowmoor (GPhC: 1039449), each overseen by a named Superintendent Pharmacist. Our erectile dysfunction service is built around:
Explore our full range of treatments on the all conditions page, or browse the online pharmacy shop. If ED is linked to other men’s health concerns, such as low energy or reduced libido, it’s also worth exploring our related guidance on premature ejaculation and general men’s health support.
Ready to find out which option could suit you?
View our frequently asked questions and answers below:
There’s no single best treatment for everyone. Sildenafil and Viagra suit men who want a well-established, shorter-acting option; Tadalafil and Cialis suit those who want more spontaneity over a longer window; and Avanafil suits men looking for a faster onset. A prescriber will help match you to a suitable option based on your health and preferences.
Sildenafil and Viagra contain the same active ingredient and work in exactly the same way. Sildenafil is the generic version and is typically more affordable, while Viagra is the original branded product.
Cialis (Tadalafil) can remain effective for up to 36 hours, offering more flexibility around timing, while Viagra (Sildenafil) typically lasts around 4 hours. Some men prefer Cialis for spontaneity, while others find Viagra’s shorter window suits them better.
Viagra Connect is available without a full prescription for men who meet strict suitability criteria, following a pharmacist consultation. Higher doses, such as Viagra 100mg, require prescriber approval through a proper assessment.
It depends on the medicine. ED tablets must not be combined with nitrates, and caution is needed with certain blood pressure medicines and alpha-blockers. Always disclose your full medication list during your consultation so a prescriber can check for interactions.
Not always, ED can result from stress, tiredness, or a one-off situation, but persistent or worsening symptoms are worth investigating, since ED can sometimes be an early sign of cardiovascular or hormonal issues. A prescriber can help identify whether further investigation is needed.
For some men, addressing contributing factors such as smoking, excess alcohol, poor sleep, stress, or excess weight can meaningfully improve symptoms, sometimes without needing medication at all. For others, lifestyle changes work best alongside treatment rather than instead of it. A prescriber can help you understand which approach is likely to help most in your situation.
Erectile dysfunction is extremely common, and prescribers and pharmacists deal with it regularly and without judgement. An online consultation can also feel more private than an in-person conversation for men who find the topic difficult to discuss face to face.
Complete a short online consultation and, if suitable, get your ED treatment dispatched discreetly by a GPhC-registered UK pharmacy.
Medical disclaimer: This article is provided for general information purposes only and does not constitute medical advice. It is not intended to diagnose erectile dysfunction or any other condition and should not be used as a substitute for a consultation with a qualified healthcare professional. ED treatments are prescription-only medicines (with the exception of Viagra Connect, supplied under pharmacist supervision) and are not suitable for everyone; suitability is determined on an individual basis by a prescriber following a clinical assessment. If you experience chest pain, sudden vision or hearing changes, or an erection lasting longer than four hours, seek urgent medical attention. Always read the patient information leaflet supplied with your medicine and speak to a pharmacist or doctor if you have any questions about your treatment.
Medically reviewed by a UK Superintendent Pharmacist
Mohammed Ismail Lakhi MPharm
Superintendent Pharmacist at The Care Pharmacy
GPhC Registration Number: 2072815
Last reviewed on 14 July 2026
All clinical content published by The Care Pharmacy is reviewed under the governance of our Superintendent Pharmacist team to ensure it reflects current UK clinical practice and regulatory standards. Our review process checks accuracy against manufacturer product information, UK regulatory guidance, and recognised NHS sources, and content is updated when clinical guidance changes.
Medically reviewed by
Superintendent Pharmacist
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