Men who prevent their partners from experiencing the joy and satisfaction that comes with having sex are said to be impotent; this disorder is also referred to as erectile dysfunction in men. One of the best ED drugs on the market is tadalista 40mg, a fast-acting drug that doctors prescribe. Stated differently, this drug is considered to be the best substitute for the brand-name drug known as generic cialis because it has the same active ingredient, tadalafil, and both prescriptions are effective in treating erectile dysfunction. All men are able to obtain a strong erection that lasts for 36 to 48 hours with ease after using this tadalista or tadalista 60 prescription.