Pregnancy Risk Category B
How supplied
Tablets: 12.5 mg, 25 mgOTC, 50 mg
Tablets (chewable): 25 mgOTC
Capsules: 25 mg
Action
Unknown. Antihistamine that may affect neural pathways originating in the labyrinth to inhibit nausea and vomiting.
Indications & dosage
Vertigo--
Adults: 25 to 100 mg P.O. daily in divided doses. Dosage varies with response.
Motion sickness--
Adults: 25 to 50 mg P.O. 1 hour before travel; then daily for duration of trip.
Adverse reactions
CNS: drowsiness, restlessness, excitation, nervousness, auditory and visual hallucinations.
CV: hypotension, palpitations, tachycardia.
EENT: blurred vision, diplopia, tinnitus, dry nose and throat.
GI: dry mouth, constipation, anorexia, nausea, vomiting, diarrhea.
GU: urine retention, urinary frequency.
Skin: urticaria, rash.
Interactions
Drug-drug. CNS depressants: increased drowsiness. Use together cautiously.
Effects on diagnostic tests
Contraindications
Contraindicated in patients with hypersensitivity to drug.
Nursing considerations
Patient teaching
*Liquid contains alcohol. **May contain tartrazine. †Canada ‡Australia §U.K. OTCOver the counter
Reactions may be common, uncommon, life-threatening, or COMMON AND LIFE-THREATENING