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A member asked:
Will taking antihistamines at bedtime reduce its effects the second day?
A doctor has provided 1 answer
Antihistamines: at night should not have any effect on how well they work the next day. People don't get desensitized to antihistamines, though a lot think they do. If you are taking Benadryl (diphenhydramine) at bedtime, don't expect it to take care of you the next day though, as it is a short acting medication.
Answered 10/31/2014
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