MEDICA 16 is a β,β'-dimethyl hexadecanedioic acid which exhibits hypolipidemic and antidiabetogenic effects in the rat. In animals that were fed a diet which was 0.25% MEDICA 16 by weight, the hypolipidemic effect consisted of a 70-80% decrease in plasma chylomicrons and VLDL-triacylglycerols as well as a 40-60% decrease in plasma VLDL-cholestrol.