Sildenafil
The generic of Viagra. Take ~30–60 minutes before intimacy; effects typically last around 4 hours.
Take when you need it. Nothing else changes.
The generic of Viagra — an as-needed tablet taken ~30–60 minutes before intimacy, with effects that typically last around 4 hours.
How it works
Sildenafil is a PDE5 inhibitor that increases blood flow to the penis in response to sexual arousal. It doesn't create desire on its own — it removes a common physical bottleneck so the natural response can happen.
Take one 30 to 60 minutes before intimacy, avoid heavy or high-fat meals right before, and expect effects to last around four hours. Your clinician picks a starting dose and adjusts if needed.
What to expect
- CadenceAs-needed, up to once daily.
- Onset30–60 minutes; take on a relatively empty stomach for fastest onset.
- DurationRoughly 4 hours.
- Good fit ifYou want spontaneity in a specific window rather than daily dosing.
- Side-effect patternHeadache, flushing, or nasal congestion are the most common; typically mild.
Who it's for
Sildenafil is the right first call when you want a proven, short-acting option and don't need coverage across an entire weekend. A quick intake confirms it's safe with the rest of your care.
- Adults 18+ experiencing occasional or consistent difficulty with erections.
- Prefer as-needed dosing rather than a daily tablet.
- Want a short, defined window rather than 24+ hours of coverage.
- New to PDE5 inhibitors — sildenafil is a well-studied starting point.
- —Currently taking nitrates for chest pain (a serious interaction).
- —Severe cardiovascular disease or recent heart event without clearance.
- —Uncontrolled low blood pressure, or specific vision disorders (NAION).
- —Under 18, or otherwise not appropriate on clinician review.
Get the most out of a dose
Sildenafil isn't a switch — it clears a physical bottleneck so the natural response can happen. A few practical notes help it work at its best.
- Take 30–60 minutes before intimacyAbsorption peaks in that window. Earlier is fine; much later and you'll miss the peak.
- Avoid heavy or high-fat meals just beforeFatty meals blunt absorption and can slow onset. A light meal is fine.
- Alcohol in moderation, not excessA drink is fine; heavy drinking blunts erections regardless of medication.
- Arousal still mattersSildenafil supports the physiology — desire, stimulation, and connection do the rest.
- Give it two or three triesResponse and dose can take a couple of attempts to dial in. Loop your clinician in if it's not landing.
