is used to treat erectile dysfunction in men. The tadalafil present in this drug works by increasing the blood pressure in the arteries of the penis. The effect of this drug can be felt for a long time i.e. about 24 to 36 hours. For the fastest results, take this medicine after a low-fat meal. This medicine should be taken only once in 24 hours. So you can enjoy sex with your partner for a long time.