prostavive review

    Duration of action of sildenafil citrate in men with erectile ...

    Introduction: Viagra (sildenafil citrate) has a rapid onset of action for the treatment of erectile dysfunction (ED). However, its duration of action has not been thoroughly investigated. Practical knowledge of the time window available for sexual intercourse would be valuable for couples planning sexual activity.

    Management of Erectile Dysfunction - AAFP

    Onset of action Duration† Sildenafil (Viagra) 50 to 100 mg: One hour: 14 to 60 minutes: Up to four hours: Tadalafil (Cialis) 10 to 20 mg: One to 12 hours: 16 to 45 minutes: Up to 36 hours ...