“Apparently, the inhibitory effect of benzoic acid on the formation of salicyluric acid is not due to competition for glycine but involves another phase in the biotransformation process.”
“The major route of biotransformation of benzoic acid and salicylic acid in man is conjugation with glycine , resulting in the formation of hippuric acid and salicyluric acid, respectively.”
“The rate of hippuric acid formation after oral administration of 5 g. benzoic acid in solution is increased markedly by the concomitant administration of glycine.”