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A 35-year-old female asked:

i take 1 zyrtec in the morning and 2 benadryl (diphenhydramine) at bedtime. is that to much antihistmine?

1 doctor answer3 doctors weighed in
Dr. Michelle Zetoony
Sleep Medicine 18 years experience
Yes: First depends on the dose and age but yes, zyrtec is a 24 hour medication and Benadryl (diphenhydramine) is a 6-8 hour med. Routinely this should not be ongoing. If symptoms are persistent look into another cause.

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Last updated May 21, 2018
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