Vidalista is a common orally administered drug for the treatment of erectile dysfunction. This drug belongs to a group of drugs known as PDE5 inhibitors and contains Tadalafil as the active ingredient which is similar to Cialis. Tadalafil acts directly on the enzyme responsible for the penile erection to relieve ED. The drug is effective in achieving a strong erection only in the presence of sexual stimulation. One tablet per day is the recommended dose, and its effect lasts up to 36 hours in the body. Cold drinks or alcohol should not be consumed while taking this medicine as its side effects are seen directly on your body.