Nasonex (Mometasone furoate) is a nasally inhaled steroid used for treatment of nasal symptoms of seasonal and perennial allergic rhinitis. Claritin (Loratadine) is a new generation antihistamine used for the relief of nasal and non-nasal symptoms of seasonal allergic rhinitis. There are no known interactions between these two medications; therefore I see no reason why they cannot be used together for seasonal allergy symptoms.
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