Sildenafil ED Treatment

Sildenafil is a commonly used erectile dysfunction treatment that helps men get and maintain an erection when sexually aroused. It is usually taken before sex and is active for around 4 hours. Treatment is supplied subject to an online assessment and pharmacy approval.

Sildenafil is a prescription-only treatment for erectile dysfunction. It works by helping increase blood flow to the penis when sexually stimulated.

It is the generic version of Viagra and is one of the most widely used ED treatments. The NHS describes sildenafil as a medicine used to treat erection problems, also known as erectile dysfunction.

Available options

How it works

Sildenafil helps relax blood vessels and improve blood flow to the penis. It only works when you are sexually aroused and does not increase sexual desire.

How to take Sildenafil

Sildenafil is normally taken before sex, where suitable. It is usually taken only when needed and should not be taken more than once in 24 hours unless advised by a prescriber.

For best results, avoid taking it with a heavy meal, as this can delay how quickly it works.

Sildenafil vs Tadalafil

Sildenafil is usually chosen by men who want a treatment taken before sex and active for a shorter window.

Tadalafil may suit men who want a longer window of activity, as it can remain active for up to 36 hours.

Who may not be suitable

Sildenafil may not be suitable if you:

• take nitrates for chest pain or heart problems

• use recreational “poppers” such as amyl nitrite

• take riociguat or similar medicines for pulmonary hypertension

• have certain heart conditions

• have very low blood pressure or uncontrolled high blood pressure

• have been advised not to have sex for health reasons

• have had a recent stroke, heart attack or serious heart problem

• have severe liver or kidney problems

• have had sudden vision loss or certain serious eye conditions

Sildenafil must not be taken with nitrates, as the combination can cause a dangerous fall in blood pressure.

Possible side effects

Common side effects can include:

• headache

• flushing

• indigestion

• feeling sick

• dizziness

• blocked nose

The NHS lists headache, feeling sick, indigestion and dizziness among the most common side effects.

Seek urgent medical help if you develop chest pain, sudden vision or hearing changes, or an erection lasting longer than 4 hours