Sildenafil (generic Viagra) tablets to treat erectile dysfunction. Available in 25mg, 50mg and 100mg.

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Erectile Dysfunction (ED) is a very common phenomenon, affecting 150 million men globally. While it is most common in middle age, affecting over 50% of men over 40, it can develop at any age.
Sildenafil is an effective treatment for the majority of men experiencing ED on an intermittent or regular basis.
Sildenafil is the generic name for the drug more commonly known as Viagra, and choosing this non-branded version is often a more affordable alternative. It is only available with a prescription and comes in a choice of 25mg, 50mg and 100mg dosages. Sildenafil typically gets to work within 30 minutes and is successful for around 75% of men with ED.
Sildenafil works by temporarily increasing the blood flow to the penis, resulting in more reliable and longer-lasting erections. While it is effective for most men, a short consultation is necessary to ensure that this is a safe and viable treatment for you.
The Independent Pharmacy provides a quick, easy and totally discreet consultation to ensure that this treatment is the best erectile dysfunction treatment for your needs.
Sildenafil (also known as generic Viagra) is a more affordable alternative to the branded drug, delivering the same results at a more affordable price.
It is available in a choice of strength options:
A prescription is required to get started with Sildendafil. The consultation needed to get this ensures that this ED treatment is the best fit for your personal needs. Your clinician will also work with you to determine which dosage works best for you.
Getting and maintaining an erection requires a significant amount of blood to be able to flow to and fill the spongy cells inside your penis. However, there are a range of factors that may prevent this blood flow, and this may cause erection difficulties - which is known as erectile dysfunction.
Sildenafil belongs to a group of drugs called PDE5 inhibitors. These relax blood vessels by blocking the enzymes found in the blood vessel walls that restrict blood flow. This temporarily improves blood flow to the penis, making an erection possible.
In most cases, Sildenafil gets to work in 30-60 minutes and remains effective for 4-6 hours. However, you still need to be sexually excited for the treatment to be effective.
You should take Sildenafil tablets by swallowing them whole with water 30-60 minutes before having sex.
While you can take SIldenafil with food, it may take longer to get to work if taken when eating a large meal.
Grapefruit and grapefruit juice should be avoided as these can interact with Sildenafil in ways that can make it less effective.
The recommended dosage is 50mg. You should not exceed a dosage of 100mg in 24 hours. You should not take Sildenafil more than once a day.
Store Sildenafil in its original packaging at below 30°C.
Keep Sildenafil out of the sight and reach of children. Do not consume when past the expiry date.
The active ingredient is Sildenafil (as sildenafil citrate) in 25mg, 50mg or 100mg doses.
Inactive ingredients may include:
Common side effects of Sildenafil use include:
| Facial redness (flushing) | Headaches | Nausea |
| Stuffy nose | Indigestion | Dizziness |
These are temporary and tend to disappear within a few hours.
Rare side effects include:
| Vomiting | Skin rash | Eye irritation |
| Bloodshot/red eyes | Eye pain | Seeing flashes of light |
| Light sensitivity | Watery eyes | Palpitations (pounding heartbeat) |
| Rapid heartbeat | High or low blood pressure | Muscle pain |
| Fatigue (feeling sleepy) | Reduced sense of touch | Vertigo |
| Ringing in the ears (tinnitus) | Dry mouth | Upper abdominal pain |
| Heartburn and/or acid reflux | Blood in urine or semen | Pain in the arms or legs |
| Nosebleed | Feeling hot | Fainting |
| Stroke | Heart attack | Irregular heartbeat (arrhythmia) |
| Temporary decreased blood flow to parts of the brain | Tightness in the throat | Numbness of the mouth |
| Bleeding at the back of the eye | Double vision | Blurred vision |
| Abnormal sensation in the eye | Swelling of the eyes or eyelids | Distorted vision (seeing spots in your vision or halos around lights) |
| Pupil dilation | Discolouration of the whites of the eyes |
If you experience any of these rare side effects, or any that are not listed above, contact your doctor or pharmacist immediately.
You should consult with your doctor or pharmacist before taking SIldenafil if you have:
Sildenafil is for use by men over the age of 18 ED. You should not use this treatment if:
You should not use Sildenafil in conjunction with any other oral or topical ED treatments (those applied to the skin).
You should avoid taking Sildenafil with alcohol in excess quantities as this can reduce erectile function.
Sildenafil can interfere with some medications, most commonly those used to treat chest pain (nitrates). As such, you should not take these in conjunction as they may lead to a dangerous fall in blood pressure.
In the event of a medical emergency, you should tell your doctor or pharmacist that you have taken Sildenafil, the dosage and when it was taken.
Sildenafil works by affecting the enzymes that control the blood vessels in the penis. By enabling blood flow to the penis, you are more likely to be able to get and keep an erection long enough for satisfactory sex. Studies show that Sildenafil is effective in around 75% of men with ED.
Sildenafil typically gets to work within 30-60 minutes of the tablet being swallowed. If you have taken Sildenafil with large quantities of food, it may take longer to take effect and so it could be longer before you’re able to get an erection.
Sildenafil is the generic form of Viagra. They are essentially the same treatment sold under a different name. Viagra is a well-known brand and therefore more expensive than the generic equivalent. In terms of ingredients and effectiveness, however, they are identical.
You should not take Sildenafil with other medications unless your doctor or pharmacist has told you that it is safe to do so. Sildenafil can interact with other medications, especially nitrates used in the treatment of chest pains and may result in a dangerously low drop in blood pressure.
If SIldenafil doesn't work for you the first time it may be because:
States of anxiety and stress can prevent sexual arousal and may therefore make Sildenafil less effective. It is still important to be aroused and as relaxed as possible.
No. There is no clear evidence stating that Sildenafil affects the fertility of men who take it.
Sildenafil is safe to take in the long term. There is no evidence to suggest that taking Sildenafil in accordance with dosage guidelines has any negative effects over the span of many months or even years.
The different strengths of Sildenafil (25mg, 50mg, 100mg) refer to the amount of the active ingredient present in each tablet. 50mg is a common starting dose for most men with ED, and this may be increased or decreased depending on your needs.
There are several alternatives to Sildenafil ranging from alternative medications to non-medical alternatives.
Medical alternatives include the generic medications Tadalafil (often sold under the brand name Cialis) and Vardenafil (often sold under the brand name (Levitra).
These are also PDE5 inhibitors and work in the same ways.
However, studies show that the effects of Tadalafil are longer-lasting with effects lasting up to 36 hours.
Other non-medical alternatives include penis pumps that use suction to draw blood flow to the penis, or penile rings that inhibit the flow of blood away from the penis for longer-lasting erections.
It's quick and easy to make sure that Sildenafil is the right ED treatment for you, before deciding on a dosage that best fits your needs.
A short online consultation is needed to make sure that this treatment is a good fit for you. This process is quick, easy and completely confidential.
Once we have determined that SIldenafil is a safe and appropriate ED treatment for you, the product can be made available.
Always consult with a licensed medical professional before starting any new treatment.
As a UK-based pharmacy, we follow the same strict regulatory standards as any physical pharmacy. Our expert clinical team and services are overseen by multiple regulatory bodies to ensure your care is always safe, secure and confidential.








We think accessing healthcare should be easy. Whether we’re fulfilling NHS prescriptions or helping people find the right treatments, we aim to offer our customers dependable, economical and convenient access to medicines with a personal and discreet service.
View all the available prices for Sildenafil 25mg, 50mg, & 100mg tablets from The Independent Pharmacy.
Visit our Erectile Dysfunction (ED) page for treatments, advice and FAQs.
Our expert clinical team have published a range of reviewed and clinically-sourced information on Sildenafil to ensure you have all the information you need to decide on your treatment.