Vidalista 20mg should be taken precisely as prescribed by your doctor. Vidalista 20mg contains tadalafil but is delivered at a lesser dosage of the medication. Here are some important facts about Vidalista 20mg that you should know. It's critical to take tadalafil exactly as directed by a doctor. The medication should usually be taken 30 to 60 minutes before sexual activity. 30 to 60 minutes before you want to engage in any sexual activity, take Vidalista 20 mg. Take the medication empty-handed for optimal effects. You can take the drug with a glass of water. Make sure you take the drug whole, not chewed or crushed, before swallowing.