Avanafil guide
On-demand use of prescribed avanafil for erectile dysfunction, with timing and interaction safety advice.
Avanafil guide
On-demand use of prescribed avanafil for erectile dysfunction, with timing and interaction safety advice.
- READ TIME
- 2 min read
- PATHWAY
- Avanafil 50/100/200mg
This guide does not replace the package leaflet or your doctor's assessment.
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Electronic prescription
Sent to the pharmacy you choose; each pharmacy decides whether it can dispense it.
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How to use
- Take about 15-30 minutes before activity
Swallow the tablet whole with water. Use only the prescribed 50 mg, 100 mg, or 200 mg strength. Avanafil works only with sexual stimulation.
- Food and dose timing
It can be taken with or without food, although food may delay the onset. Do not exceed one dose in 24 hours. Avoid grapefruit juice.
- Never combine with nitrates or riociguat
Do not take avanafil with nitrate medicines, nitric oxide donors such as poppers, or riociguat. The combination can cause a dangerous fall in blood pressure.
Medicines and interactions to review. You use nitrates, nitric oxide donors such as poppers, or riociguat Alpha-blockers, strong CYP3A4 inhibitors, other erectile-dysfunction medicines, and grapefruit need review
Dose schedule
- As needed, not more than once daily
Take only when sexual activity is planned. Do not combine with other PDE5 inhibitors.
- Review effectiveness
If the prescribed dose is not effective after several attempts, discuss with the prescriber.
Side effects
Common vascular effects
Headache, facial flushing, nasal congestion, back pain, dizziness. Usually mild and resolve.
Prolonged erection
Priapism (over 4 hours) is rare and needs urgent care. Sudden vision or hearing loss is very rare.
Do not use if
- You use nitrates, nitric oxide donors such as poppers, or riociguat
- A clinician has advised that sexual activity is unsafe because of a heart condition
- You have a serious liver condition, very low blood pressure, or a recent stroke or heart attack that has not been reviewed
If any item may apply, do not use the medicine until a clinician has reviewed it.
When to contact your doctor
- An erection that does not go away, sudden loss of vision or hearing, chest pain, collapse, or a severe allergic reaction: seek urgent care
- Marked dizziness, fainting, palpitations, or a headache that is severe or persistent
- The prescribed dose is not suitable or does not provide a satisfactory response after several correctly timed attempts
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
Erectile dysfunction treatments work in most cases but not every attempt. Requires sexual arousal. Several tries may be needed.
Sources
Questions while you're on treatment?
Message your doctor in your private chat about side effects, doses or anything that worries you. Replies in under 2 hours on average.
- Discreet follow-up in the private chat
- Download your e-prescription
- Renewals reviewed by your doctor
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