Men who have trouble getting an erection take cenforce 100 mg. Only guys who are at least eighteen years old should use this medication. This medication contains a substance called Sildenafil Citrate, which helps men have a powerful erection during sexual activity so they may enjoy it for an extended period of time. This medication has a six-hour half-life. This medication is taken with water. This medication can be used either before or after a meal. Avoid taking this medication with cold or fatty foods as they will lessen its effectiveness. As prescribed by your physician, you should take this medication.