A method of using Neoandrographolide for lowering blood sugar, lowering blood lipid, improving liver function and improving renal function. The method includes preparing a composition comprising Neoandrographolide as the active ingredient, and administering the composition to lower the blood sugar or blood lipid of a user, to prevent a decrease in liver function of a user, or to improve the renal function of a user. The Neoandrographolide is the only active ingredient in the composition.
