Tadalista 40 is a medicine that is used to treat impotence in men who have erectile dysfunction. It works by preventing the body's phosphodiesterase enzyme from working. By boosting blood flow to the penis during physical contact, tadalafil helps to both initiate and maintain an erection when used in conjunction with sexual stimulation. Take tablets whole, and avoid taking grapefruit juice. Preferably, take them with water or juice. Each person's use of this drug may differ based on age and additional factors. Therefore, always inquire with your doctor about the proper dosage of this prescription. The drug should be stored at room temperature in a closed container away from heat sources, moisture, and direct sunlight. Keep out of the reach of minors.