Benfluorex, sold under the brand name Mediator, is an anorectic and hypolipidemic agent that is structurally related to fenfluramine. It acts mostly as a prodrug of norfenfluramine. It was fraudulently claimed to improve glycemic control and decrease insulin resistance in people with poorly controlled type-2 diabetes through norfenfluramine acting as a 5-HT2B receptor agonist