Kamagra 100 mg is a medication used to treat erectile dysfunction (ED). The active ingredient in Kamagra is sildenafil citrate, which is the same active ingredient found in Viagra. Kamagra 100 is typically taken about 30 to 60 minutes before sexual activity. It is usually effective for about 4 to 6 hours, although this can vary based on individual response. The medication is generally taken orally, and it can be consumed with or without food. However, a heavy or high-fat meal may delay its onset. Kamagra 100 mg helps men achieve and maintain an erection by increasing blood flow to the penis. It works by inhibiting the enzyme phosphodiesterase type 5.