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A member asked:
What would happen if i took too much allegry medicine? would i just get sleepy? anything else bad?
A doctor has provided 1 answer
Antihistamine: The newer generations, mostly just sleepy. Some of the older allergy medications such as Diphenhydramine (benadryl) also can have some anticholinergic properities and cause cardiac rhythm problems and bowel bladder problems at very high doses.
Answered 6/25/2014
5.7k views
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