Filitra 40 mg contains vardenafil, a PDE‑5 inhibitor that increases blood flow to the penis, helping achieve and maintain an erection when sexually stimulated. It’s a stronger dose intended for moderate to more severe erectile dysfunction (ED), with effects typically starting in about 30–60 minutes and lasting around 4–6 hours for most men.

Compared to other common ED drugs:

Sildenafil (e.g., Viagra): Vardenafil (Filitra) and sildenafil work similarly, but vardenafil may act slightly faster and with fewer visual side effects. Both usually last roughly 4–6 hours.

Tadalafil (e.g., Cialis): Tadalafil stays active much longer — up to ~36 hours — giving a broader “window” for sexual activity, while Filitra’s effect is shorter.

Potency/Dose: Filitra 40 mg is a higher dose of vardenafil, useful if lower strengths weren’t effective, but its overall frequency and duration are similar to other on‑demand ED drugs (except tadalafil’s extended duration).

In summary, Filitra 40 mg is a strong, on‑demand ED medication with a moderate effect duration, comparable to sildenafil but shorter than tadalafil. Choice of drug and dose should be made with a doctor based on health status and response.