Sildamax 100 mg is a medication used to treat erectile dysfunction (ED) in men. It contains sildenafil citrate as its active ingredient, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Sildamax works by relaxing the blood vessels in the penis, allowing for increased blood flow when sexually stimulated. This enhanced blood flow helps men to achieve and maintain an erection suitable for sexual activity.