Megalis 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil, the same active ingredient found in Cialis. This drug is part of a group called phosphodiesterase type 5 (PDE5) inhibitors, which work by boosting blood flow to the penis through the cGMP pathway.
Erectile dysfunction, often described as the inability to get or keep an erection, can be caused by both physical and psychological factors.An erection happens when the penis fills with blood. This occurs because the blood vessels bringing blood to the penis widen, while those carrying it away narrow. This traps blood in the penis and causes an erection. When a man is sexually aroused, nitric oxide is released in the penis. This chemical triggers the production of cGMP, which manages the widening and narrowing of blood vessels—helping maintain a strong erection.
