Influence of Hyperthyroidism on Vitamin A Reserves of the Albino Rat

Abstract

A diet containing 50% dried skimmed milk powder furnishes a sufficient amount of the stable components of the vitamin B complex, so that excellent responses are obtained to pure crystalline vitamin B as an antithyrogenic agent in experimental hyperthyroidism. Such a ration, however, containing 10% butterfat and supplemented with 4 drops of cod liver oil per animal per day, does not provide a sufficiency of vitamin A to counteract the rapid catabolism produced by a daily administration of 0.2 mg. of thyroxin.