Sildenafil Tablets (25mg, 50mg & 100mg)
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Availability
Fastest delivery available: 25/04/2025
| Qty | 1 | 4 | 8 | 16 | 32 | 64 |
|---|---|---|---|---|---|---|
| Price | £0.47 | £6.99 | £14.99 | £19.99 | £24.99 | £30.08 |
| Qty | 4 | 8 | 16 | 32 | 64 |
|---|---|---|---|---|---|
| Price | £11.99 | £19.99 | £34.98 | £48.99 | £79.99 |
| Qty | 4 | 8 | 16 | 32 | 64 |
|---|---|---|---|---|---|
| Price | £9.99 | £19.99 | £29.99 | £59.99 | £104.99 |
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.
- Effective ED treatment
- 25mg, 50mg, 100mg tablets available
- Generic Viagra
- Effective within 30-60 minutes
- Free online consultation available
- Next-day delivery available
Sildenafil Tablets (25mg, 50mg & 100mg) Summary
| Dose | Take ONE tablet 30-60 minutes before any sexual activity. Do NOT take more than ONE dose a day |
|---|---|
| Mechanism of Action | Sildenafil 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. |
| Effectiveness | Most 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 |
| Side Effects | Can include nasal congestion, headaches, facial flushing, mild vertigo, pounding heartbeat and blurred vision |
| Time to Work | Sildenafil takes 30-60 minutes to work, it will work faster on an empty stomach |
| Price | From £0.47 |
Overview
What is Sildenafil and How Does it Work?
Sildenafil is an effective erectile dysfunction treatment that helps men who struggle to achieve or maintain an erection during sexual intercourse.
Taken up to one hour before sex to increase blood flow to the penis, sildenafil tablets can help you achieve and maintain an erection. You should note that sildenafil tablets won't help you to get an erection unless you are stimulated first.
The active ingredient of Sildenafil – sildenafil citrate – is a phosphodiesterase type 5 (PDE5) inhibitor. This type of drug works by blocking the PDE5 enzyme, which helps your blood vessels relax and improves blood flow.
It is the widening of the blood vessels that increases blood flow to your penis, allowing you to achieve an erection when aroused. PDE5 is mainly found in the corpus cavernosum, which is one of the columns of tissue in the penis. PDE5 inhibitors such as sildenafil stop PDE5 from reversing the erection process.
Sildenafil also boosts nitric oxide, the naturally-produced chemical which helps your penis muscles to relax.
How Long Does Sildenafil Last
Sildenafil lasts for 4-6 hours. It is advised that for Sildenafil tablets to work properly, you will need to be excited and in a state of sexual arousal.
Sildenafil medication alternatives
Whereas Sildenafil tablets prove effective for men across the UK, it’s often wise to discuss with your physician or pharmacist which ED medication will best suit your needs.
During your online consultation with a Cloud Pharmacy pharmacist, the following alternatives may be suggested:
- Tadalafil Tablets: Generic Cialis, available in 2.5mg, 5mg, 10, 20mg mg doses
- Viagra Tablets: Most recognised name in ED medication. Viagra tablets are available in 25mg, 50mg, and 100mg doses
- Eropid Tablets: A branded version of Sildenafil. Eropid comes in 50mg tablets and is available OTC
- Spedra Tablets: Contains the active ingredient Avanafil. This ED medication is available in 50mg, 100mg, 200mg doses)
- Cialis Tablets: The branded version of Tadalafil, Cialis is available in 2.5mg, 5mg, 10mg and 20mg doses
- Vardenafil Tablets: Vardenafil is an effective ED treatment available in 5mg, 10mg and 20mg doses
| ED Medication (prices start from) | 4 Tablets | 8 Tablets | 16 Tablets | 32 Tablets |
| Sildenafil Tablets | £6.99 | £14.99 | £19.99 | £24.99 |
| Viagra Connect | £20.99 | £34.99 | £60.99 | £79.99 |
| Viagra Tablets | £24.99 | £43.99 | £79.99 | £139.99 |
| Eropid Tablets | £13.49 | £23.95 | £43.99 | £79.99 |
| Spedra Tablets | £28.99 | £49.99 | £88.99 | N/A |
| Cialis Tablets | £38.99 | £73.99 | £135.99 | £254.99 |
| Vardenafil Tablets | £21.97 | £39.98 | £67.99 | £109.99 |
| Cialis Together Tablets | £18.99 | £33.99 | N/A | N/A |
| Tadalafil Tablets | £8.49 | £17.50 | £23.99 | £45.95 |
Sildenafil Over the Counter Alternatives
For those seeking an over-the-counter (OTC) alternative to Sildenafil tablets, please see below:
Always consult with your GP or pharmacist before beginning any course of ED treatment.
Informational Sources
If you’d like to find out more about Sildenafil tablets or erectile dysfunction in general, we’ve compiled a list of additional resources below for you to take a look at:
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 users 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.
Directions
Sildenafil Tablets Dosage & Directions of Use
Sildenafil Dosage Options
- Sildenafil comes in three main doses: 25mg, 50mg, and 100mg
- Typically, start with a 50mg dose, which can be adjusted to 25mg for a lower dose or 100mg for a higher one based on how well it works for you.
Usage Instructions for Sildenafil Tablets
- Swallow the Sildenafil tablet whole with a drink. Water or fruit juice is fine, but avoid grapefruit juice as it may slow down the medicine's absorption
- Take the tablet on an empty stomach rather than after a meal for faster results
- Aim to take Sildenafil about an hour before you plan to have sex. It can be taken anywhere from 30 minutes to four hours before sexual activity, but not more than once every 24 hours. Some individuals with specific medical conditions may receive different dosing instructions from their doctor
- 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
- Only take a 100mg tablet if advised by a doctor
Ingredients
Sildenafil Ingredients
Ingredients in Sildenafil Tablets:
Active Substance: Sildenafil
- 25 mg tablet: 25 mg sildenafil (as the citrate salt)
- 50 mg tablet: 50 mg sildenafil (as the citrate salt)
- 100 mg tablet: 100 mg sildenafil (as the citrate salt)
Other Ingredients:
Tablet Core:
- Microcrystalline cellulose
- Calcium hydrogen phosphate (anhydrous)
- Croscarmellose sodium (contains sodium)
- Magnesium stearate
Film Coat:
- Hypromellose
- Lactose (contains lactose)
- Triacetin
- Titanium dioxide (E171)
Side Effects
Sildenafil Side Effects
There exist 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
Who Cannot Take Sildenafil?
Sildenafil should only be taken by men. Women cannot take it 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
- Leukaemia
- Multiple Myeloma
- Stomach ulcer
- Bleeding disorders, such as haemophilia
- Any kind of penis problem or disorder
Sildenafil Drug Interactions
There are a few drugs that can react with Sildenafil tablets causing them not to 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
Patient Info Leaflet
Sildenafil patient information leaflet
For more information about Sildenafil tablets, please take a look at the information leaflet below:
Sildenafil Tablets (25mg, 50mg & 100mg) FAQs
Can you Buy Sildenafil Over the Counter?
Sildenafil tablets cannot be bought over the counter in the UK without a prescription. Your suitability for sildenafil will be assessed before you can buy the tablets online.
To buy sildenafil tablets at Cloud Pharmacy, you’ll need to complete a short questionnaire. Once your suitability has been confirmed, we will dispense your medication in discreet packaging with next-day delivery.
Does Sildenafil Make You Last Longer?
Sildenafil is an erectile dysfunction treatment but is not necessarily an effective treatment for premature ejaculation. Although some people think that the medicine can make you last longer in bed, this may be a misconception.
Sildenafil vs Viagra, Are They the Same?
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, Which is Better?
Cialis is a branded medication containing Tadalafil, whereas Sildenafil is an ingredient present in Viagra. Cialis is more expensive than Sildenafil. 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 Vs Tadalafil, Which is Better?
Sildenafil and tadalafil are both treatments for erectile dysfunction. The two medicines contain different active ingredients — Sildenafil contains sildenafil citrate, while Tadalafil contains tadalafil. Sildenafil takes up to an hour to take effect and lasts up to 6 hours. Tadalafil takes up to 30 minutes to take effect and can last up to 36 hours.
Can I Take Sildenafil Tablets When Drinking Alcohol?
If you are taking Sildenafil tablets, you may drink alcohol, as alcohol does not stop Sildenafil from being effective. But while it’s usually ok to have a drink while taking sildenafil, alcohol may make it harder for you to achieve an erection. This will differ from person to person so figure out what works best for you.
Is Sildenafil Safe to Use with Other ED Treatments?
Sildenafil should not be combined with other ED treatments, as it can interact with them. Consult your doctor or pharmacist before considering alternative options, and avoid unlicensed substances like Kamagra while using Sildenafil.
Is it ok to use Fake Sildenafil?
Yes, it matters. Fake Sildenafil can be harmful. Only get genuine medication from a licensed supplier with a prescription.
Related Guides
Delve into a variety of content written by our medical experts
- Viagra Reviews: Dosage, Side Effects, Cost & More
- Cialis Reviews: What Real Customers Think
- Viagra Connect Reviews: Cost, Efficacy, User Reviews
- Spedra vs Viagra: Which Is Better? Differences, Dosage & More
- Vardenafil vs Tadalafil: Which Pill Is Best For ED?
- Spedra Reviews: What Real Users Think
- Cialis Together Reviews: What Real Users Think
- Best Viagra Alternatives In The UK
- Kamagra: The Long, Hard, Truth Of This ED Product
- Sildenafil Reviews: What Real Users Think
AUTHORED BY
Ibrahim co-founded Cloud Pharmacy, stemming from a desire to revolutionise healthcare accessibility in the UK. This vision was conceptualised in 2013 to provide patient-centred care across the country.
REVIEWED BY
Nazmul brings over 11 years of experience to his role as Superintendent Pharmacist & Director. A University of Strathclyde alumnus, he has a strong background in pharmacy, previously working as a pharmacist at Boots before co-founding Cloud Pharmacy with Ibrahim.
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Sildenafil Tablets (25mg, 50mg & 100mg) Reviews
Confirm Sildenafil Tablets (25mg, 50mg & 100mg) treatment selection
| 25mg | 1 | £0.47 |
| 25mg | 4 | £6.99 |
| 25mg | 8 | £14.99 |
| 25mg | 16 | £19.99 |
| 25mg | 32 | £24.99 |
| 25mg | 64 | £30.08 |
| 50mg | 4 | £11.99 |
| 50mg | 8 | £19.99 |
| 50mg | 16 | £34.98 |
| 50mg | 32 | £48.99 |
| 50mg | 64 | £79.99 |
| 100mg | 4 | £9.99 |
| 100mg | 8 | £19.99 |
| 100mg | 16 | £29.99 |
| 100mg | 32 | £59.99 |
| 100mg | 64 | £104.99 |
