Tadalafil is seen as a generic brand. Which is an effective medicine for the treatment of men suffering from erectile dysfunction. The effect of vidalista tablet lasts for 36 hours. Take this medicine one hour before sexual intercourse. vidalista 20 is known as weekend Pills. The drug can be taken orally with water but not with alcoholic beverages. Because it reduces the effect of the drug. Seek medical advice before using this medication.