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by SamOxford
Fri Apr 27, 2012 3:19 pm
Forum: hay fever and rhinitis
Topic: One a day antihistamine
Replies: 5
Views: 24694

One a day antihistamine

I take cetirizine hydrochloride. One of the widely available one a day antihistamines. I am aware they last around 8 hours, and the instructions are clear that you should take one a day, and not to exceed this dose. My question is, what does it mean by one a day. Is this no more than one in 24 hours...
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