My son is 10 years, he has a severe pollen allergy. I gave him zyrtec at 5:00pm, can I give Benadryl (diphenhydramine) at 12:00am?

Dr. Thomas Josa, University of Copenhagen Faculty of Medicine Answered Dec. 23, 2015

36 years experience in Internal Medicine - Allergy & Immunology

Agree with Dr Novick. Are the tree pollens starting up already where you live? If the combo cetirizine and Benadryl (diphenhydramine) aren't working consider starting a steroid nasal spray (quite safe actually) or could he be coming down with a cold?

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Dr. Oscar Novick, University of Bern Faculty of Medicine Answered May. 19, 2014

55 years experience in Pediatrics

Pollen allergy. You can but you can give him another dose of zyrtec (cetirizine) in the morning if necessamry.

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Dr. Amrita Dosanjh, UC San Diego School of Medicine Answered Dec. 23, 2015

33 years experience in Pediatrics - Pulmonology

Mgt. I would suggest avoiding pollen, by closing the windows, using a HEPA filter indoors. Nasal steroids and saline rinses may also help. I would using Zyrtec or Claritin.

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