Suhagra tablet is a powerful medicine used to treat men suffering from erectile dysfunction. The effect of this drug lasts for 4 to 6 hours. Sildenafil is found as an active ingredient called citrate. suhagra 100 can be taken orally with water. But do not take this medicine with alcohol-like drinks as it reduces the effect of this medicine. If you take this medicine as directed by your doctor, you will not see any serious side effects.