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A 32-year-old member asked:

I had zyrtec about 6 hours ago. can i take benadryl (diphenhydramine) now?

1 doctor answer2 doctors weighed in
Dr. Yash Khanna
Family Medicine 57 years experience
Yes you can: Yes you can if your symptoms are not controlled with zyrtec (cetirizine) alone for short period.

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A 32-year-old member asked:

Should i take Benadryl (diphenhydramine) until my zyrtec really kicks in?

1 doctor answer3 doctors weighed in
Dr. Brant Ward
Allergy and Immunology 13 years experience
Probably not helpful: Both drugs need to be absorbed by the GI system before they take effect to stop itching and sneezing (can take up to 1 hr). Benadryl (diphenhydramine) can dry up mucus (and make you sleepy), which zyrtec will not do at any time. If you have taken zyrtec for several days without relief from itching or sneezing, you may have something besides allergies (e.g. A cold) or need a different treatment. See your doctor.

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Last updated Aug 30, 2018

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