A member asked:

Gave my 4 yr old cetrizine 10 hours ago how long should i wait to give her bromfed, (brompheniramine) it works a lot better and will not be giving any more cetrizine ?

A doctor has provided 1 answer
Dr. Natalie Hodge answered

Specializes in Pediatrics

24 hours: Cetrizine has a 24 hour half life. You'll need to wait a full 24 hours before dosing any other antihistamines. Best of luck!

Answered 11/7/2014

3.6k views

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