Understand your treatment
About sildenafil
The same active ingredient as Viagra, at a fraction of the price. A prescription-only medicine — a registered prescriber reviews every request before our pharmacy dispenses.
How many tablets do I need?
Most people start on 50 mg, taken about an hour before sex. One tablet covers one occasion. The prescriber recommends 100 mg only when clinically appropriate.
Pack size does not determine how often you should take a medicine. Follow your prescriber’s instructions and the patient information leaflet.
Taking sildenafil safely
Take one tablet with water about an hour before sex. Never combine it with nitrates, GTN spray or poppers.
Side effects
Common effects include headache, flushing, blocked nose and indigestion. Sudden vision or hearing loss, or an erection lasting over four hours, needs urgent medical help.