An active metabolite, or pharmacologically active metabolite is a biologically active metabolite of a xenobiotic substance, such as a drug or environmental chemical. Active metabolites may produce therapeutic effects, as well as harmful effects.[1]
^Fura, Aberra (February 2006). "Role of pharmacologically active metabolites in drug discovery and development". Drug Discovery Today. 11 (3–4): 133–142. doi:10.1016/S1359-6446(05)03681-0.