The average cost for 60 tablets of 20mg of Zafirlukast is $42.03 with a free GoodRx coupon. This is 59.41% off the average retail price of $103.55.
Typical dosage for Zafirlukast
- Adults and children age 12 years or older: The typical dose is 20 mg by mouth twice a day.
- Children ages 5 to 11 years old: The typical dose is 10 mg by mouth twice a day.




