Cenforce d is a drug used to treat erectile dysfunction in men. This medicine is for men aged 18 to 65, women and young children should avoid taking it. This medicine is usually taken on an empty stomach or with food. An empty stomach is taken for effective dosage. Take this medicine only once a day. Consult a doctor to get rid of your sexual problem. The effect of this medicine takes about 30 minutes or 1 hour. The effect of this medicine lasts for 5 to 6 hours.