23 Jan 2019 If your hives won;t go away, what can you do to get rid of them? cetirizine (Zyrtec), fexofenadine (Allegra), and loratadine (Claritin) first. Medicines like famotidine (Pepcid) or ranitidine (Zantac) can be used together with other treatments. If you take these for a while, you...