Abstract
1. Urinary excretion of tyramine O-sulphate in six normal human subjects after an oral dose of 125mg of tyramine hydrochloride alone, and with a supplement of Na2SO4, was determined by using chromatographic and electrophoretic separations followed by spectrophotofluorimetry. 2. In every case the excretion of tyramine O-sulphate was increased significantly after sulphate supplementation.