Men who struggle with erection and impotence take Cenforce 25 Pills. Sildenafil, an ingredient in this medication, helps men achieve a strong erection during sexual activity. This is a male-only drug. Take this medication half an hour before sexual activity. This medication has a 3 to 6-hour half-life. This medication is taken with water. This medication can be taken either before or after a meal. Follow your doctor's advice when taking this medication.