I just started on Zyrtec. Switched from Claritin. Seems like it knocked me out last night. I took 400 mg of ibuprofen also.
It could be the side effect of Zyretc - (cetirizine hydrochloride). It could cause drowsiness -- in up to 13.7 percent of people who take Cetirizine.
There no interactions between Tylenol, Ibuprofen & Zyretc, however please check with you doctor/pharmacist who prescribed the meds for professional & accurate info, hope this helps?
- Claritin Drug Information
- Tylenol Drug Information
- Zyrtec Drug Information
- Ibuprofen Drug Information
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