High-dose loratadine exposure in a six-year-old child
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D B Cobb1, W A Watson, M C Fernández
1University of Texas Health Science Center San Antonio, South Texas Poison Center, 78229-3900, USA.
Abstract:
Loratadine is a long-acting antihistamine indicated for the treatment of seasonal allergic rhinitis and chronic idiopathic urticaria in patients 6 years of age and older. The literature contains little information on high-dose loratadine exposures; as a consequence, poison centers are unsure of the loratadine dose that can be managed with observation and the dose that requires treatment. We report an intentional ingestion of 300 mg loratadine by a 6-y-old child that resulted in minor elevation of blood pressure and heart rate when managed with supportive care only. Further studies and case series are needed before a minimum toxic dose can be established.
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