Kamagra 100 is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which is also found in Viagra. Sildenafil works by increasing blood flow to the penis, helping men achieve and sustain an erection when sexually aroused. Kamagra 100 (like Viagra) should be used under medical supervision and prescribed by a healthcare provider. It's not recommended to use Kamagra or any similar medications without consulting a doctor, as they can have interactions with other medications and may not be safe for everyone, especially those with certain medical conditions.