PREGNANCY: A limited number of studies of hydroxyzine in pregnant women suggests that there may be a relationship between its use in the first trimester of pregnancy and congenital abnormalities in the fetus. Therefore, hydroxyzine should be avoided during the first trimester of pregnancy.

NURSING MOTHERS: It is not known if hydroxyzine is excreted into breast milk. In general, antihistamines are not recommended for use during breastfeeding because they can cause stimulation or seizures in newborns.

SIDE EFFECTS: Hydroxyzine can commonly cause sedation, tiredness, sleepiness, dizziness, disturbed coordination, drying and thickening of oral and other respiratory secretions, and stomach distress. Hydroxyzine may also cause confusion, nervousness, irritability, blurred vision, double vision, tremor, loss or appetite, or nausea. Hydroxyzine should be used with caution (if at all) in persons with narrow-angle glaucoma, prostatic hypertrophy (enlarged prostate gland), hyperthyroidism, cardiovascular disease, hypertension, and asthma.

Reference: FDA Prescribing Information

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