Table 2.

Frequencies of prescription and accumulative exposure to hydroxyzine in children under age of 5 years.

	Short-term user 1 prescription	Intermediate user 2–4 prescriptions	Long-term user ≥ 5 prescriptions
Number of patients	17,234 (70.7%)	5,659 (23.2%)	1,478 (6.1%)
Number of prescriptions	17,234	14,148	13,302
(total)
Average number of	1	2.5	9
prescriptions per
patient
Liters of hydroxyzine	0.47	1.17	4.23
syrup (average)
Max. exposure to	0.95	2.4	8.5
hydroxyzine in grams
(cumulative)