Time After StartingTime After StoppingALT* (U/L)Alk P (U/L)Bilirubin* (mg/dL)Other
Started zafirlukast 20 mg twice daily
9 months02950.7Started montelukast
13 months4 monthsNormal0.7
Resumed zafirlukast 20 mg twice daily
2 months0Symptoms and jaundice: zafirlukast stopped
3 months1 month15666.2
4 months2 months2703.1
5 months3 months1.4
6 months4 months1.2
7 months5 monthsNormal0.5Asymptomatic
Normal Values <35 <130 <1.2

From: Zafirlukast

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