The uses of Megalis - Generic Cialis include: Tadalafil relaxes muscles and increases blood flow to particular areas of the body. Tadalafil is used to treat erectile dysfunction (impotence). It works by dilating blood vessels in the penis, allowing the inflow of blood needed for an erection.
Erectile dysfunction is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. When a man is sexually stimulated, his body's normal response is to increase blood flow to his penis. This results in an erection.
Tadalafil helps increase blood flow to the penis and may help men with erectile dysfunction get and keep an erection satisfactory for sexual activity. Once a man has completed sexual activity, blood flow to his penis decreases, and his erection goes away.