Tadalista 40 mg is a medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil, which belongs to a group of medicines called PDE5 inhibitors. This medicine helps increase blood flow to the penis by relaxing the blood vessels, making it easier to get and keep an erection during sexual activity. Tadalista 40 mg works by boosting the effects of cGMP, a natural chemical in the body that controls blood flow to the penis. When a man is sexually aroused, nitric oxide is released, which helps produce cGMP. This process relaxes the muscles and widens the blood vessels, improving blood flow to the penis and leading to a firm erection. It’s important to note that sexual stimulation is required for this medicine to be effective.