How to use
Two things decide whether a dose is safe and useful: the timing, and what else is in your system.Take 100 mg about 15–30 minutes before sex
The usual starting dose is 100 mg. Depending on response and tolerability, the prescriber may choose 50 mg or 200 mg. Take no more than once per day, and remember that sexual stimulation is required.
Avoid contraindicated combinations
Never take avanafil with nitrates, nitric-oxide donors, riociguat, or another erectile-dysfunction medicine. Strong CYP3A4 inhibitors are also contraindicated; some moderate inhibitors require no more than 100 mg every 48 hours.
Dose schedule
Before each dose, check for any new heart, blood-pressure, prostate, antifungal, antibiotic, or HIV medicines. Food can delay onset, so use the timing agreed with your prescriber. After several correctly timed attempts, review efficacy and effects with the prescriber — do not repeat the dose on the same day or move to 200 mg without approval.What has been reported
Storage
Keep in the original package, away from moisture and direct heat, and out of children’s reach. Follow the temperature limit on your pack and do not use it after the expiry date.What to expect
Avanafil is designed for on-demand use and may act within the prescribed pre-sex window, but timing is not a guarantee of response. It requires stimulation and does not address every cause of erectile dysfunction — review several correctly used doses with the doctor.Related reading
For EU authorisation history and the trial evidence behind avanafil, see the avanafil medicine page. See erectile dysfunction for how the underlying condition is assessed, and safety for how doctor review works.Start a consultation
Sexual health consultation
Answer the sexual health questionnaire and a registered doctor reviews it.
They decide whether treatment is appropriate, which one, and at what dose —
and declining is a normal outcome. See what it costs
and how the review works.