Tadalista is a prescription medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil, the same active ingredient found in Cialis. Tadalista works by increasing blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection. It belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. The effects of Tadalista can last up to 36 hours, earning it the nickname "the weekend pill." It should be taken as directed by a healthcare provider and is not intended for use by women or children. Possible side effects include headache and flushing.