Suhagra is the generic name of sildenafil citrate. Sildenafil Citrate is the main active ingredient of Suhagra 100mg tablets. It is a medication that is used to treat male erectile dysfunction. It stimulates blood flow to the genitals. This helps males in obtaining or maintain an erection. Suhagra tablets are generally available in the dosages of 50mg and 100mg. Some of the most common side effects of this medicine are flushing, headache, dizziness, blurred vision, muscle pain, stomach upset, and rash.