Kamagra 100 mg is a generic version of Viagra, offering an affordable alternative for men seeking to treat erectile dysfunction. The active ingredient, Sildenafil Citrate (100 mg), is a potent phosphodiesterase type 5 (PDE5) inhibitor. This class of drugs works by relaxing the blood vessels in the penis, thereby increasing blood flow and helping men achieve and sustain an erection when sexually aroused.