Vidalista 20mg tablet is used to treat men suffering from erectile dysfunction. The effect of this drug lasts for 36 hours. tadalafil is found as the active ingredient of the name. vidalista 20 can be taken orally with water. Do not take this drug with alcoholic beverages as it reduces the effect of the drug so the side effects of this drug are seen. If you take vidalista tablet as directed by your doctor, you will not see any serious side effects.