Vardif Oral Strips 20mg is used by adult men who cannot achieve and maintain complete erection during coitus. The manufacturer is Alpha-Pharma, one of the main advantages of using it is that the user has the convenience of using a liquid solution instead of typical pills or medications. This also helps to maintain dosage accuracy. Since absorption is immediate, it is possible to have sex in 15 minutes and with proper stimulation, the erection is achieved very quickly. The dose-effect lasts 5 hours.