Montek LC contains monteleukast and levocetrizine. Cases of cholestatic hepatitis, hepatocellular liver injury, and mixed-pattern liver injury have been reported, mostly occurring in combination with other confounding factors (eg, use of other medications, administration to patients who had underlying potential for liver disease [eg, alcohol use or other forms of hepatitis]) Skin and subcutaneous tissue disorders: rebound pruritus-pruritus within a few days after discontinuation of cetirizine, usually after long-term use (eg, months to years)