Vidalista 20 mg Cialis is a medication that contains the active ingredient Tadalafil and is used to treat Erectile Dysfunction (ED) in men. It is commonly referred to as the generic version of Cialis. Tadalafil is a phosphodiesterase type 5 (PDE-5) inhibitor that helps relax the blood vessels in the penis, allowing for increased blood flow and facilitating an erection. Vidalista 20 mg should be taken orally, usually about 30 minutes to an hour before sexual activity. The effects can last up to 36 hours, earning it the nickname "the weekend pill".