Tadalafil tadalista acts as an active ingredient in occupational medicine. The drug is taken 1 hour before sex, after which its effect lasts for 36 hours. It is one of the most popular pills that you can use to solve your sexual problem. This drug is only used by men to treat their sexual problems. It should be kept away from small children and pets. This claim is also called Weekend Pill. Because this drug lasts longer than other drugs.