prodrug A substance which, after metabolic action in the body, is coverted to an active drug. prodrug drug modified by biotransformation (i.e. metabolic processes) to achieve desired pharmacological action proÂ·drug (prÅ'drÅ­g) A class of drugs, the pharmacologic action of which results from conversion by metabolic processes within the body.
verb (used without object), sagged, sagging. 1. to sink or bend downward by weight or pressure, especially in the middle: The roof sags. 2. to hang down unevenly; droop: Her skirt was sagging.
Causes of Sagging Breasts. It is a fact that breast sagging, also referred as ptosis, is a condition experienced by all women sooner or later in their life (except those having small breasts). For many of us, it occurs quite early, even without pregnancy. Besides, there are numerous teens experiencing drooping breasts.