The main active ingredient of this medication, Sildenafil Citrate 100 mg, works by relieving erectile dysfunction or impotence problems in men. The main active ingredient in Malegra 100 works amazingly well by increasing blood flow and clearing arterial blockages in the penile region. The full mechanism of action of the component of this drug helps an impotent man achieve a natural erection of the penis for a longer sexual session. High-dose drugs for erectile dysfunction should only be taken once a day. Swallow the pill whole with a glass of water. For best results, swallow the regular tablet while fully aroused.