Probably not: Allergex is an antihistamine . It is chlorpheniramine. If it was an allergic reaction, it should have helped.. If it helped , but only slightly then maybe taking a longer acting antihistamine like (cetirizine or fexofenadine) might help. You should also consider other causes for the swelling is the antihistamines are not helping.
Answered 12/27/2017
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