The evaluation of hepatoprotective effect of Mustard seed (MS) extract was assessed against paracetamol induced hepatic injury in albino rats. Animals were divided into 4 groups, each of 5 rats. Group I served as control group; group II treated with ethanolic extract from Mustard seed at a dose level of 500 mg/kg body weight orally once for 10 days. Group III represents induced liver injury animals using single dose of paracetamol (PCT).  Group IV combined treatment of MS extract and PCT. Elevated serum marker enzymes such as ALT, AST, ALP, GGT and LDH were observed due to paracetamol treatment. Combined administration of MS extract with PCT to rat partially normalized the altered hepatic biochemical markers caused by PCT. Moreover, PCT caused histological changes in livers of rat including swelling and dilation in sinusoidal space, inflammation in portal tract and hepatocytes, as well as, hyperplasia in Kuppfer cells. However, co-administration of MS extract with PCT alleviated to some extent the changes caused by PCT but not as the normal liver. The results of this study strongly indicate that Mustard seed has possible potent hepatoprotective action against paracetamol induced hepatic damage in rats.