Vidalista is also available in a sublingual form. This type of drug has better activity than film-coated counterparts, and is less likely to cause degradation in the body. Vidalista 20 has a very high rate of positive reviews. It's also easy to buy, and you can get a prescription online or through a doctor. PDE5 inhibitors are drugs that help two-thirds of men with ED. These drugs include tadalafil and vardenafil. Depending on the drug, a man may need to take several doses before it works properly. He may also need to adjust the dosage.