Kamagra Chewable contains sildenafil, a phosphodiesterase type 5 (PDE5) inhibitor, which is used to treat erectile dysfunction in men. When taken before planned sexual activity, Kamagra chewable tablets inhibit the breakdown of a chemical called cGMP, produced in the erectile tissue of the penis during sexual arousal, and this action allows blood to flow to the penis, causing and maintaining the erection. Kamagra chewable tablets work faster than tablets as they are absorbed into the bloodstream more quickly, are effective within 30 minutes and last up to 4 hours.