Toptada 20 mg is an oral tablet that is used for the treatment of erectile dysfunction (ED, also known as impotence) in men. It contains Tadalafil that helps increase blood flow to the penis. The medicine should be taken at least 30 minutes before planned sexual activity. The effects of Toptada 20 mg last for around 36 hours. Consult your doctor before using for the best directions and a safer experience. Toptada 20 mg contains Tadalafil as its main active ingredient, which is a PDE 5 inhibitor. It relaxes the muscles in the blood vessel walls and helps increase the blood flow in the penis. PDE5 is responsible for the destruction of cGMP molecules. Toptada 20 mg blocks PDE5 action and enables the production of cGMP, resulting in the penis being filled with more blood. cGMP is responsible for the contraction and dilation of blood vessels, and its production is crucial for the penis because it allows more blood to flow into the penis for an erection.