Both are FDA-approved, well-studied generics — the real difference is how they fit your rhythm. Sildenafil is the 4–6 hour on-demand classic; tadalafil’s window runs up to 36 hours. Five questions, instant read, nothing stored.
Educational guide, not a prescription decision — a licensed clinician weighs your health history, medications, and goals. Windows per FDA labeling: sildenafil is taken as needed ~1 hour before activity (high-fat meals can slow absorption, per the NIH clinical reference); tadalafil’s effect can last up to 36 hours (FDA label). Maro’s clinicians can also prescribe a combination approach when appropriate. Your answers never leave this page. Related reading: how long tadalafil lasts and when ED medication isn’t working.