ICitrulline yiL-enantiomer yecitrulline.Inendima njenge-EC 1.14.13.39 (nitric oxide synthase) inhibitor, i-agent ekhuselayo, i-nutraceutical, i-micronutrient, i-metabolite yabantu, i-Escherichia coli metabolite, i-Saccharomyces cerevisiae metabolite kunye ne-metabolite ye-mouse.Yi-enantiomer ye-D-citrulline.Yi-tautomer ye-L-citrulline zwitterion.