Order Sildenafil online

Sildenafil is the generic version of the erectile dysfunction (ED) medication Viagra. You’ll see ‘sildenafil citrate’ listed as the active ingredient on medications like Viagra or Viagra Connect. 

Generic Sildenafil has the same active ingredient and works in exactly the same way as Viagra, by helping you to get and keep an erection. 

If you’re thinking about trying a treatment to help with ED, this is a cheaper alternative to Viagra, with the same benefits. 

Back to top

You can order Sildenafil conveniently from Superdrug Online Doctor. You'll need to fill in a brief questionnaire and place an order. One of our doctors will review your order and prescribe the treatment if it’s suitable for you.

It’s also possible to get Sildenafil on the NHS. You’ll need to make an appointment with your GP who will decide if Sildenafil is the right treatment for you.

Sildenafil is a prescription-only treatment. Viagra Connect is the only licensed ED medication currently available to buy in a pharmacy, after a consultation with a pharmacist. 

Whether you get Sildenafil through an online provider or your GP, you should always book an appointment to see your GP to check for and treat any underlying causes for your ED symptoms. 

Back to top

Sildenafil belongs to a group of medicines called phosphodiesterase-5 (PDE-5) inhibitors which help blood flow more easily into your penis. 

The medication will not automatically give you an erection but as you become aroused, it will make it easier to get one, and to keep it for longer.

Back to top

You take Sildenafil as needed, when you’re going to have sex.

You take 1 tablet with water, usually 1 hour before you intend to have sex. But it can be taken up to 4 hours before. 

The effects of the medication last between 4 and 6 hours. 

Sildenafil does not cause erections on its own – you'll need to be relaxed and aroused for it to work. 

It usually takes around 30 minutes to an hour to take effect. 

Sometimes men find that Sildenafil does not work for them the first time they use it. This is normal and it may take a few tries before you notice that it’s working. 

Try taking it on 6 to 8 different days and if you still do not notice any improvement, speak with your doctor who can help you adjust your dose or try a different medication. 

Try to avoid or limit the following before taking Sildenafil as they may make the medication less effective: 

• Heavy meals or fatty foods.
• Alcohol.
• Grapefruit.

Back to top

Sildenafil is not effective for treating sexual dysfunction in women. As it’s an erectile dysfunction medicine, it is only suitable for use by men. 

The only time it’s prescribed for women is for pulmonary hypertension (a type of high blood pressure). 

Back to top

Back to top

Sildenafil is rated excellent from Superdrug Online Doctor on Trustpilot. You can also find reviews of Sildenafil on drugs.com. 

Back to top

As with any medicine, Sildenafil can cause side effects in some men, but these are usually mild. 

Common side effects 

• Feeling sick (nausea).
• Hot flushes.
• Indigestion.
• Blurred vision.
• Dizziness.
• Headache.
• Stuffy nose.

For a full list of side effects, look carefully at the patient information leaflet that comes with your medicine before taking it. If you’re worried about any of the side effects, have a chat with your doctor, who may decide to lower the dose or prescribe a different medicine.

If you ever get side effects that are unusual, painful, or serious (for example, a prolonged or painful erection, chest pain, loss of vision, or a seizure), you should stop taking Sildenafil and get medical help right away. 

Back to top

If you’re taking any other medicines apart from Sildenafil, or have any other conditions apart from ED, it’s really important to tell your doctor. This will allow them to prescribe the most appropriate treatment for you.

For example, if you have any of the following conditions, make sure to let your doctor know as Sildenafil may not be suitable for you.

• Sickle cell anaemia, leukaemia, or multiple myeloma.
• A deformity of your penis or Peyronie's disease (curved penis).
• Heart problems or a previous stroke.
• Stomach ulcer or bleeding problems.
• Rare inherited eye diseases (such as retinitis pigmentosa).
• Any loss of vision due to non-arteritic anterior ischaemic optic neuropathy (NAION).

Sildenafil is also not suitable for people who are allergic to any of its ingredients, or those who are taking:

• Nitrates.
• Medicines known as nitric oxide donors such as amyl nitrite (‘poppers’).
• Medicines known as protease inhibitors, such as for the treatment of HIV.
• Alpha-blocker therapy for the treatment of high blood pressure or prostate enlargement.

It’s important not to take any other ED treatments alongside Sildenafil and to check the manufacturers leaflet and talk to your doctor for a full list of medications which may interact with Sildenafil. 

Sildenafil and alcohol

Drinking alcohol makes it harder to get and keep an erection. To get the best out of Sildenafil, you should limit the amount of alcohol you drink as it can make it difficult for the medicine to work. 

Sildenafil and painkillers

If you need to take painkillers while taking Sildenafil, paracetamol and ibuprofen are good choices. 

Sildenafil and blood pressure

Sildenafil is sometimes not suitable if you’re taking medicine for high blood pressure or if your blood pressure is not under control. If you have high or low blood pressure, talk things through with a doctor who should be able to advise on the best treatment for you.

Sildenafil and heart problems

Sildenafil is not suitable for those who are taking certain medicines for chest pain or angina. It’s especially important to tell your doctor about any medications you are taking for current or recent heart problems. 

Back to top

Back to top