Background: Nitric oxide (NO) bioavailability is important for the normal metabolic function of the liver. Murraya koenigii has been reported to positively affect liver function. However the effect of Murraya koenigii as tea on Nω-Nitro-L-Arginine Methyl Ester (L-NAME) induced liver dysfunction is unknown. Aim: The present study was thus designed to investigate the effect of Murraya koenigii leaves as tea on L-NAME induced liver dysfunction. Material and Methods: Curry tea was produced either entirely from the dried and powdered leaves of Murraya koenigii or with aril of Thaumatococcus danielii. The 2 different Curry tea types were administered for 21 days to adult male albino Wistar rats divided into 6 groups (n=8). Group I animals served as control and were given 0.5ml/Kg of distilled water. Groups II and V animals were administered with curry tea (CT). Group III and VI animals were administered with curry thaumatin tea (CTT). Concurrently, L-NAME (40mg/kg) was administered to groups IV-VI respectively for 21 days. Blood and liver samples were collected at the end of the study for biochemical, histological and immunohistochemical analysis. Results: L-NAME induced liver dysfunction evidenced by liver histology, increased activities of ALT, AST, hyperlipidemia, hepatic oxidative stress and increased hepatic NfKb expression. CT and CTT intake ameliorated the L-NAME induced liver dysfunction evidenced by liver histology, increased NO hepatic bioavailability, reduced activity of ALT and AST, increased hepatic antioxidant system and decreased hepatic NfKb expression. Thaumatin added to curry as tea didn’t significantly reduced the hepatoprotective, antioxidant and anti-lipidemic property of curry tea intake in rats. Conclusion: Non-selective inhibition of NO impaired liver function in rats. Curry administration as tea interfered with the ability of L-NAME to inhibit NO synthesis and this interference was associated with improved hepatic function in rats.