Cenforce D is usually the best drug to solve a sex problem. Sildenafil acts as an active ingredient in Cenforce D pills. Cenforce D is taken one hour before sexual intercourse. The effect lasts for 5-6 hours after taking it. The drug is used to treat sexual problems. Is it the best drug to solve the sexual problem? It is advisable to consult a doctor before taking these tablets. These pills are used by men. Is it the best drug to solve the problem of impotence?