The key difference between cetirizine hydrochloride and cetirizine dihydrochloride is that cetirizine hydrochloride is useful in treating symptoms of hay fever and other upper respiratory allergies by relieving the symptoms temporarily, whereas cetirizine dihydrochloride is important in treating allergy symptoms that are associated with hay fever. Cetirizine hydrochloride is a second-generation antihistamine that is sold […]

