What does it do?

Sildenafil is used to treat impotence (difficulty getting and maintaining an erection) in men.

How should you take it?

Take sildenafil as directed with a glass of water, about one hour before having sex.

What if you forget a dose?

Take sildenafil when required. The maximum dose is one tablet a day.

Can you take other medicines?

Some medicines available without a prescription may react with sildenafil including:

• glyceryl trinitrate (e.g. Nitrolingual Pumpspray®, Lycinate®)

Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products (e.g. St John's wort) or recreational drugs.

What side effects might you notice?

Side Effects	Recommended action
Prolonged erection (longer than four hours) Changes in vision	Tell your doctor immediately
Urinary symptoms	Tell your doctor
Headache, dizziness Hot flushing Runny or blocked nose Indigestion	Tell your doctor if troublesome
Stomach upset	Take with food

If you notice any other effects, discuss them with your doctor or pharmacist.

Other information:

• Tell your doctor if you have blood pressure, bleeding, blood, stomach, heart, liver, kidney, penis (other than impotence), hearing or eye problems, or if you have had a recent stroke.
• Grapefruit, grapefruit juice or sour/Seville oranges may react with sildenafil. Discuss with your pharmacist.
• If you are taking nitrate medicines (e.g. glyceryl trinitrate), you should not use sildenafil. Discuss with your doctor or pharmacist.