On March 12, 2007, Greenberg Traurig submitted a citizen petition to FDA to switch four prescription antihistamine and antihistamine-decongestant drugs from prescription to OTC status. The four drugs are ALLEGRA (fexofenidine HCl), ALLEGRA D (fexofenidine HCl; pseudoephedrine HCl), ZYRTEC (cetirizine HCl), and ZYRTEC D (cetirizine …
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