Cenforce is a very effective medicine for the problem of erectile dysfunction. The main ingredient in this drug is sildenafil citrate which is considered to be very effective in increasing blood flow to the muscles in the penis. This medicine should be taken only once a day. This drug should be taken 30 to 40 minutes before sexual intercourse. The effect of this medicine lasts for 3 to 4 hours. • Cenforce 100 • Cenforce 200