Suhagra 100mg is the best for men's health. Do not take any other medicine while taking Suhagra 100mg. Suhagra 100mg is used to treat erectile dysfunction in adult men. Always take this medicine exactly as your doctor told you. Swallow the medicine with a glass of water. Do not take more than once a day. Sildenafil works by helping to relax blood vessels which allows you to increase blood flow to the penis when you are sexually aroused.