Vardenafil is more potent than sildenafil and typically requires a lower dosage. This may reduce the risk of side effects in ...

A typical dose of vardenafil — about 10 mg — takes about 60 minutes to start taking effect. If you’re over age 65, a healthcare professional might recommend that you take a lower dose of 5 mg.

In total, 194 patients were randomly allocated to treatment with vardenafil (at an initial dose of 10 mg, adjusted after 2 weeks to 5, 10 or 20 mg) and 189 patients to placebo treatment ...

Tadalafil is slightly more expensive than sildenafil on a per-tablet basis, although this may be less of a concern if you ...