Hovedmetabolitterne hos mennesker skyldes hydroxylation af isopropylsidekæden enten på methincarbon eller på en af methylgrupperne; hovedmetabolitternes aktivitet er henholdsvis ca.
The main metabolites found in humans result from hydroxylation of the isopropyl side-chain, either on the methine carbon, or one of the methyl groups; activity of the main metabolites is about 5– 6 and 3 times less potent than nateglinide, respectively.