Background: Diabetes mellitus (DM) is a metabolic disorder of the endocrine system which results in persistently high blood glucose levels. Available control measures do not completely cure the disease and most patients in the tropics cannot afford diabetes drugs regularly. Amongst other plants, Mangifera indica (MI), Persea americana (PA), and Ageratum conyzoides (AC) are used individually as traditional medicine by most people for the management of diabetes. This work was set to produce polyhe...