A little: Zyrtec is a new generation antihistamine and is very good at treating itching, sneezing, runny nose. It is less effective for severe nasal congestion. The product zyrtec-d contains a decongestant that may help. Also, the topical nasal steroid sprays are even more effective with less side effects for nasal congestion associated with allergies.
Answered 11/27/2017
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