The prodrug to drug conversion can occur before absorption, during absorption, after absorption, or at a specific site in the body In the ideal case a prodrug is converted to the drug as soon as the desired goal for designing the prodrug has been achieved• The prodrug to drug conversion can occur before absorption, during absorption, after absorption, or at a specific site in the body. • In the ideal case a prodrug is converted to the drug as soon as the desired goal for designing the prodrug has been achieved