Kamagra 100mg is a medication used to treat erectile dysfunction (ED) in men. It contains sildenafil citrate, a phosphodiesterase type 5 (PDE5) inhibitor, which works by relaxing blood vessels in the penis, enhancing blood flow, and facilitating an erection during sexual stimulation. Typically, Kamagra is taken about 30 to 60 minutes before sexual activity, and its effects can last up to 4 hours. Common side effects include headaches, dizziness, flushing, and indigestion. It's important to consult a healthcare provider before use, especially for individuals with heart, liver, or kidney conditions. Kamagra is not approved for use in women or children and should not be combined with nitrates due to potential serious interactions.