What avanafil is and when the FDA approved it
Avanafil (Stendra) is the newest of the four PDE5 inhibitor pills for erectile dysfunction in the United States, with an initial FDA approval in 2012. Like sildenafil, tadalafil and vardenafil, it helps the penis respond to arousal; it does not cause an erection by itself.
The Stendra label lists 50 mg, 100 mg and 200 mg tablets. A generic avanafil tablet now also appears on DailyMed, but it is a far smaller market than the older pills, a point we come back to below.
How fast is it, and how does it work?
Avanafil’s main distinction is timing. The label lets men take the 100 mg or 200 mg dose as early as about 15 minutes before sexual activity, and the 50 mg dose about 30 minutes before. MedlinePlus gives the same timing and limits it to once in 24 hours. For comparison, sildenafil and vardenafil are usually taken about an hour ahead.
The mechanism is the same as the rest of the class. Sexual arousal releases nitric oxide, which raises cGMP and relaxes the blood vessels and spongy tissue of the penis. PDE5 breaks cGMP down; avanafil blocks PDE5, so the erection signal lasts longer. In the fasting state it peaks in a median of 30 to 45 minutes, and its half-life is about 5 hours, which makes it a short-acting option rather than a weekend pill.
Dose context from the label, which your provider uses to set yours:
| Dose | Earliest labeled timing | When it is used |
|---|---|---|
| 50 mg | About 30 minutes before sex | Men on a stable alpha-blocker, or on moderate CYP3A4 inhibitors |
| 100 mg | About 15 minutes before sex | Usual starting dose |
| 200 mg | About 15 minutes before sex | If 100 mg is not enough and is well tolerated |
A high-fat meal delayed the peak by a little over an hour and lowered it by 39% in testing, so a heavy dinner can cancel out the quick start.
Fewer vision and back-pain effects?
Avanafil’s lab profile is more selective than sildenafil’s. The label reports that avanafil is more than 100 times more potent at PDE5 than at PDE6, the retinal enzyme behind the blue-tinted vision some men get, while sildenafil is only about tenfold selective. Across all avanafil trials, the label notes, a single participant reported a change in color vision.
Back pain was also uncommon. In the 12-week trials it was reported by 3.2%, 2.0% and 1.1% of men on 50, 100 and 200 mg, against 1.1% on placebo, which compares with the more familiar back ache of tadalafil. Headache was the most frequent effect, rising from 5.1% at 50 mg to 10.5% at 200 mg, followed by flushing and nasal congestion.
A fair caveat: no large trial has compared avanafil head to head with the other pills, so these are numbers from separate labels, not a direct contest. Our sildenafil vs avanafil comparison lays them side by side.
Cost and availability: the practical limits
The biggest barrier to avanafil is not medical. As of October 2026, a DailyMed search for avanafil returns only a handful of listings, including the brand and one generic tablet, while sildenafil and tadalafil each return well over 150. Fewer manufacturers can mean patchier pharmacy stock and less price competition than the long-established generics have.
Ultimate Male does not publish medication prices, and we will not guess at one here. What a given ED medicine costs you depends on which drug and strength fit, how many doses you use a month, and the pharmacy that fills it. If avanafil is on the table, ask for a quote before you decide; our page on ED medication cost without insurance explains the moving parts, and the clinic offers itemized receipts for FSA or HSA use.
Who should not take avanafil
Avanafil carries the same absolute nitrate contraindication as every ED pill. Do not take it with nitroglycerin, isosorbide or any other nitrate, or with riociguat or vericiguat. If a nitrate becomes necessary in an emergency, the label asks for at least 12 hours after the last avanafil dose, with close monitoring. Our page on ED pills and nitrates explains why the combination is dangerous.
Avanafil also needs care or another choice if you:
- take ritonavir, ketoconazole or other strong CYP3A4 inhibitors (the label says not to use it);
- take an alpha-blocker or several blood pressure drugs, or drink more than three units of alcohol around a dose;
- have severe kidney or liver disease, or retinitis pigmentosa, which were not studied;
- have had a heart attack, stroke, life-threatening arrhythmia or a heart procedure in the last 6 months, groups the label says were not studied.
Sudden vision or hearing loss, chest pain, or an erection lasting longer than four hours needs 911 or an emergency room, not a callback.
How Ultimate Male handles a request for avanafil
The clinic’s ED medications menu includes the oral PDE5 inhibitors, dosed for each man. Whether avanafil specifically is the right pick, and whether it can be filled for you at a sensible cost, is something the provider confirms at your consultation rather than something we can promise on a web page.
What drives that decision is clear. A PA-C or MD looks at how much the 15-minute onset matters to you, your history with tadalafil or sildenafil, your heart and blood pressure medicines, and lab results drawn on site at San Gabriel or Downey. Follow-up then checks response and side effects. If avanafil is not practical, the conversation turns to the alternatives that are, starting with a free 10-minute call.
