Men's sexual issues like impotence and erectile dysfunction are treated with Cenforce 100 Amazon . When having sex, this medication helps men achieve a strong erection. Only men who are at least eighteen years old can use this medication. Sildenafil is an ingredient in this medication. This medication can be taken either before or after a meal. If this medication is taken half an hour before sexual activity, it works well. As prescribed by your physician, you should take this medication. This medication takes four to six hours to take effect. This medication can be taken either before or after a meal.