Sildenafil, a medicine used to treat male erectile dysfunction, is marketed under the Sildigra. Sildenafil is a member of the phosphodiesterase type 5 inhibitor medication class. Steer clear of grapefruit and alcohol. High-fat foods should be avoided as they may lessen the effects of medications. Water is advised when taking it. The entire pill is consumed with water. Since the medicine only combines quickly with water in the bloodstream, other solvents should be avoided. 30 to 60 minutes before engaging in sexual activity, the medicine should be taken. It is not recommended to take more than one pill in a single day.