Vardenafil is the main active ingredient in ... Approved for once-daily use and with a longer duration of action (24-36 hours ...
Vardenafil is more potent than sildenafil and typically requires a lower dosage. This may reduce the risk of side effects in ...
Porst H et al. (2006) Extended duration of efficacy of Vardenafil when taken 8 hours before intercourse: a randomized, double-blind, placebo-controlled study. Eur Urol 50: 1086–1095 For many ...