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Adverse reactions which have been reported with the use of antihistamines are as follows:
Central Nervous System: Sedation and sleepiness (often transient), dizziness, disturbed coordination, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, paresthesias, neuritis, convulsions, euphoria, hallucination, hysteria, faintness.
Genitourinary:Urinary frequency, difficult urination, urinary retention, early menses.
Read the Cyproheptadine (cyproheptadine hydrochloride) Side Effects Center for a complete guide to possible side effects
MAO Inhibitors prolong and intensify the anticholinergic effects of antihistamines.
Antihistamines may have additive effects with alcohol and other CNS depressants, e.g., hypnotics, sedatives, tranquilizers, antianxiety agents.
Last reviewed on RxList: 4/3/2009
This monograph has been modified to include the generic and brand name in many instances.
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