Suhagra is a medication that can treat impotence and erectile dysfunction in men. This medication is only for use by men who are eighteen years of age or older. Sildenafil citrate is the primary ingredient in this drug. This drug is intended to increase blood flow to the penis in an effort to arouse desire for sexual activity. You can take this medication with or without food. If this medication is taken with cold drinks or heavy meals, its effects will be slowed down. This is a necessary medication, but you don't have to take it every day because its effects last for four to six hours. When taking this medication, it is important to follow your doctor's instructions.