Compound library / Sexual Health

Sildenafil (Viagra)

PDE5 inhibitor, the original and most widely known oral erectile dysfunction medication; works by relaxing blood vessels to improve blood flow.

CategorySexual Health
Typical routeOral
Half-life~4 hours
Common dose range25-100 mg, taken roughly 30-60 minutes before sexual activity (max once daily)
Typical cycle lengthAs needed

BioHack Track models Sildenafil (Viagra) at a half-life of 4 hours, so every dose you log is decayed against that curve and the app shows what is still circulating — not just what you typed.

Reconstitution

Oral tablet; no reconstitution needed.

Storage

Store at room temperature.

Cautions

Prescription medication. Dangerous interaction with nitrates (e.g. nitroglycerin) — never combine; can cause flushing, headache, vision changes, or low blood pressure, especially with alcohol or other blood-pressure medications.

Track Sildenafil (Viagra) in BioHack Track. Half-life, dose range and route come pre-filled from this library — log a dose and the app counts your vial down, models what is in your system, and puts it on the same chart as your labs and body composition.

Others in Sexual Health

Look up the research

These open a search of each database for Sildenafil (Viagra) — they are not citations, and nothing here is evidence for any particular dose. The same links are in the app.

Work it out