[Efficacy of tadalafil for erectile dysfunction: an updated review].

Tadalafil is an effective drug in treating erectile dysfunction (ED), and its clinical efficacy has been confirmed by a great many researches. Tadalafil is distinguished from sildenafil and vardenafil by its prolonged action lasting 36 hours for a sigle dose, compared with about 4 hours for sildenafil. Furthermore, this drug is effective in improving the erectile function of ED patients including those with various comorbid conditions. Tadalafil can help ED patients to regain morning erection and recover the confidence as a man. More and more ED patients choose tadalafil as the first line therapy because of its long efficacy and its conformability to the therapeutic requirement by restoring ED patients to normal, natural and pleasurable sexual life.