Silagra 100 mg is a medication that contains the active ingredient Sildenafil, which is commonly used to treat erectile dysfunction (ED) in men. Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor that works by increasing blood flow to the penis when a man is sexually aroused, helping him achieve and maintain an erection. Silagra 100 is a generic form of the brand-name medication Viagra, which also contains Sildenafil. It's prescribed to men who experience difficulties in getting or keeping an erection.