• Sildenafil Tablets

Sildenafil Tablets (Generic Viagra)

  • Type


  • Consumption


  • Availability

    In Stock

  • Lasts up to 4 hours
  • Effective erectile dysfunction treatment
  • Works in 30-60 minutes
  • Next-day delivery available

Sildenafil Tablets (Generic Viagra)

From £0.47

Medication features

Sildenafil is the generic version of Viagra tablets. It treats erectile dysfunction by increasing the blood flow to the penis, resulting in a harder, longer-lasting erection. This tablet is a convenient and effective treatment for men, helping to boost confidence and improve performance.

Please note: This page is only to be used as a reference of our price for this medication. If you are approved you will be offered treatment for you and the prescriber to jointly consider. However, the final decision will always be the prescriber's.
NOTE: After selecting this product, you will need to complete a short assessment, so we can make sure this medication is suitable for you.
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  • Overview

    What is Sildenafil?

    Sildenafil is a useful medication for men who struggle with erectile dysfunction and want to have sex. Sildenafil encourages blood to flow to the penis, giving men an erection. It works well - up to 70% of men who take Sildenafil have an erection after taking it.

    Sildenafil can also be used for pulmonary hypertension, but it is always administered by a doctor if used for this purpose. When it is used for this condition, it is called Revatio.

    Struggling to get an erection can cause significant issues in your sex life and impact your intimacy with your partner. There are lots of reasons for erectile dysfunction.

    Some men struggle with it because of other illnesses, such as prostate issues. However, others have psychological problems for not being able to get an erection, some men struggle as they get older, and some men cannot pinpoint a reason.

    Whatever your reason for struggling to get an erection, Sildenafil may be able to help. If you find it difficult to get an erection because of problems in your prostate, testicles, or other parts of your reproductive glands, we recommend talking to your doctor before using Sildenafil.

    How long does Sildenafil last

    Sildenafil lasts for 4-6 hours. There is always a chance that Sildenafil might not work the first time, so you are recommended to try the medication up to 8 times before you decide if it is suitable for you.

    Sildenafil Alternatives

    Sildeanfil tablets are one of many erectile dysfunction medications. Below we have compared this popular drug to other erectile dysfunction medications. Take a look at Cloud Pharmacy's erectile dysfunction treatment page for more information.

    Sildenafil vs Viagra

    Sildenafil is the same type of medication as Viagra with Sildenafil being the active ingredient in Viagra. Viagra is the branded version of Sildenafil meaning that they work in the same way. The main benefit of Sildenafil tablets has to do with the cost with Sildenafil being cheaper than Viagra. Both require prescriptions. For over-the-counter erectile dysfunction medication, why not take a look at Viagra Connect.

    Sildenafil vs Cialis

    Cialis is a branded medication containing tadalafil, whereas Sildenafil is an ingredient present in Viagra. Cialis is more expensive than Viagra and other sildenafil-containing medications. Cialis lasts longer than Sildenafil - Sildenafil typically lasts 4-6 hours, while the effects of Cialis can be experienced for up to 36 hours.

    Sildenafil and alcohol

    There is not a direct link between Sildenafil working and alcohol. It is generally ok to have a drink with Sildenafil. However, drinking alcohol can naturally make it difficult to have an erection, so it’s a good idea to not drink too much while taking Sildenafil.

    Sildenafil reviews

    Sildenafil reviews are generally positive, with most people finding that they have an erection shortly after taking the medicine. Sildenafil producers do note that not everyone will experience an erection with Sildenafil, and this is reflected in the reviews. However, about 70% of takers report experiencing an erection, and some men note that they needed to try Sildenafil two or more times before noticing the positive impacts.

    Side effects are reported as very uncommon when taking Sildenafil, but the most common reports are nausea, headaches and flushing. Most people who reported side effects said that they passed in an hour or two and that they didn’t need to speak to their doctor or seek medical attention.

    Can you buy Sildenafil over the counter?

    You require a prescription to buy Sildenafil in the UK. Cloud Pharmacy’s trained professionals can provide you with a prescription following a quick consultation.

    It is advised that if you experience ongoing erectile dysfunction issues, that you speak to your doctor for advice on dosage or potential counseling to get to the root of the issue.

    Sildenafil (Viagra) Summary

    Sildenafil DoseTake ONE tablet 30-60 minutes before any sexual activity. Do NOT take more than ONE dose a day
    Sildenafil Mechanism of ActionSildenafil is part of a drug class known as PDE-5 inhibitors. It works by inhibiting an enzyme, which allows for smooth muscle relaxation and increased blood flow to the penis.
    Sildenafil EffectivenessMost men will notice a firmer and longer lasting erection with sildenafil. Most people who use sildenafil found it to work much better when taken on an empty stomach
    Sildenafil Side EffectsCan include nasal congestion, headaches, facial flushing, mild vertigo, pounding heartbeat and blurred vision
    Sildenafil Time to WorkSildenafil takes 30-60 minutes to work, it will work faster on an empty stomach
    Sildenafil PriceStarting from £0.47. Branded viagra is much more expensive.
  • Directions

    How to take Sildenafil

    Sildenafil 50mg or 100mg both come in tablets that you can swallow or chew, or as a powder form that you can mix into a drink.

    Take Sildenafil tablets up to 4 hours before sexual intercourse with a glass of water or juice (not grapefruit juice). When taking for erectile dysfunction purposes, consume on an empty stomach.

    Sildenafil dosage

    Sildenafil dosage amounts range from 25mg to 100mg. Sildenafil 50mg is the most common dosage, although some men react better to 25mg.

    You should only take Sildenafil 100mg if you have been advised to by a doctor. Some men who have more severe erectile dysfunction or who are taller and heavier may respond better to Sildenafil 100mg.

    You should only ever take one tablet or serving of Sildenafil at a time, and you shouldn’t take more than one in a day.

    How long does Sildenafil take to work?

    Sildenafil effects are unusually noticeable 30-60 minutes after consuming the tablets, but it is still at its optimum effectiveness when taken four hours before intercourse. However, Sildenafil does not cause an erection on its own - the medication requires you to be aroused as well.

    Sildenafil can also be used to maintain an erection for long enough to have sex to ejaculate. Some men also use it to prevent premature ejaculation.

  • Side Effects

    Sildenafil side effects

    There exist both common, less serious side effects and more severe side effects that need immediate medical attention.

    Common side effects

    • An erection that lasts longer than normal (less than 4 hours)
    • Nosebleeds
    • Fever
    • Red face
    • Insomnia
    • Upset stomach
    • Headache
    • Nausea and vomiting
    • Cold-like symptoms, including sore throat and runny nose
    • Respiratory infection symptoms

    If these symptoms don’t go away or feel severe, consult your doctor as soon as possible.

    Severe side effects

    These side effects are more serious. Consult your doctor if you experience the following when you take Sildenafil tablets, and go to A&E if your symptoms are severe:

    • Symptoms of low blood pressure, including confusion, lightheadedness, fatigue, weakness, nausea, fainting,
    • dizziness and blurry vision
    • Shortness of breath
    • Hearing problems
    • Problems with vision
    • Heart issues that could indicate a heart attack. Symptoms include trouble speaking, pain in your chest, confusion, and feeling lightheaded

    Go to A&E or call 999 immediately if you experience the following:

    • If you experience an erection that lasts for longer than 4 hours, you should seek emergency medical treatment - as this can cause permanent damage to the penis
    • Sudden hearing loss
    • Sudden vision loss
  • Warnings

    Sildenafil drug reactions

    There are a few drugs that can react with Sildenafil tablets causing them to not work or, significantly increasing the possibility of side effects. If you are taking any other type of medication, you should speak to your doctor about potential reactions.

    Drugs that are known to react with Sildenafil include:

    • Alpha-blockers, although these can generally be taken more than 6 hours before you take Sildenafil
    • Nicorandil or nitrates, including GTN spray and isosorbide mononitrate tablets

    Who cannot take Sildenafil

    Sildenafil for erectile dysfunction should only be taken by men. It cannot be taken by women to increase arousal.

    There are also some other conditions that mean you should not take Sildenafil. Do not consume the drug if you:

    • Have had allergic reactions to any kind of medications, especially Sildenafil
    • Have liver disease or any kind of heart issue
    • Experience low blood pressure, as Sildenafil can cause your blood pressure to drop further. If you have had low blood pressure in the past, see your doctor to get your blood pressure assessed before you take Sildenafil
    • Take any chest pain medications, such as nitrates. These can react badly with Sildenafil
    • Have had a stroke
    • Have had a heart attack, as Sildenafil could cause you to experience more heart issues
    • Have hereditary eye disease. If you have any type of eye disease, speak to your doctor before you take Sildenafil

    There are also some important conditions that you should consult with your doctor about before taking Sildenafil:

    • Sickle cell anaemia, which is a low amount of red blood cells
    • Leukaemia, a cancer of the blood
    • Multiple Myeloma
    • Stomach ulcer
    • Bleeding disorders, such as haemophilia
    • Any kind of penis problem or disorder
  • Patient Info Leaflet

    Sildenafil patient information leaflet

    For more information about Sildenafil tablets, please take a look at the information leaflet below:

  • FAQ

    • What is Sildenafil 100mg UK?

      Sildenafil 100mg UK is the strongest strength of Sildenafil (Viagra) availalbe in the UK. 100mg sildenafil citrate is avaialble for purchase from Cloud Pharmacy as well as 25mg and 50mg strenghts of sildenafil. 

    • When Was Viagra / Sildenafil Invented?

      The Sildenafil compound was originally developed by drug giant Pfizer in the 1980's for the treatment of hypertension (high blood pressure) and angina pectoris (chest pain due to heart disease). During the heart clinical trials, researchers discovered that the medication was better at inducing erections that it was at treating angina. 

      After undergoing clinical trials in the 1990's sildenafil (Viagra) was patented in 1996 and went onto the market in 1998 after receiving FDA approval. Viagra has been on the market for over 20 years, meaning it is the oldest medication on the market approved by the FDA for erectile dysfunction. 

    • Is Teva Sildenafil the Same as Viagra?

      Sildenafil Teva is the generic version of viagra that is used for the treatment of erectile dysfunction (ED). Viagra is so popular that members of the general public whom are not normally familiar with medications are likely to know that the Viagra can be used for the treatment ED.

      Teva Sildenafil is the generic version fo Viagra, as mentioned previously the medication Viagra for ED was brough to market by Pfizer in 1998. Once the patent had expired a 'generic' version of the medication was now legally allowed for production by other drug manufacturers. 

      The generic version fo Viagra is Sildenafil and Teva was the first generic drug manufacturer to make sildenafil and sell it. It was widely distributed and much cheaper than viagra, whilst exerting the same effects.

    • How Do You Take Sildenafil?

      Sildenafil (Viagra) should be taken 60 minutes prior to any sexual activity. For increased likelihood of better performance it is advised that you take sildenafil on an empty stomach. It is important to not take more than 100mg of sildenafil citrate in a 24 hour period. If you take Sildenafil with high volumes of alcohol (more than two units) there is a chance that it may not work.

      Since sildenafil was primarily developed to reduced blood pressure, taking Sildenafil (viagra) with alcohol (which also reduces blood pressure) may increased the likeliehood of side effects such as dizziness, lighheadedness, fainting, flushing, headache and heart palpitations.

    • How Long Does It Take for Sildenafil to Start Working?

      Sildenafil usually takes 30-60 minutes to have noticeable effects. It's effects can last for up to 5 hours, however this is largely dependent on various factors, for example how much food you have had to eat before taking sildenafil or how big/small you are.