Drowsiness occurs in over 20% of patients treated with Zonalon® Cream
If excessive drowsiness occurs it may be necessary to reduce the frequency of applications, the amount of cream applied, and/or the percentage of body surface area treated, or discontinue the drug.
Since drowsiness may occur with the use of Zonalon® Cream, patients should be warned of the possibility and cautioned against driving a car or operating dangerous machinery while using this drug.