Subsidy Information and Financing Scheme MAFBetaine Powder 180 g 1) Treatment of classic homocysteinuria 2) Treatment of homocysteinuria secondary to sulfite oxidas... See all × MAFBetaine Powder 180 g 1) Treatment of classic homocysteinuria 2) Treatment of homocysteinuria secondary to sulfite oxidase deficiency, methionine synthase deficiency or cobalamin-related remethylation pathway defect.