Two of the biggies are Zyrtec and Claritin ... with ENT and Allergy Associates in Plainview, NY. The long-acting, over-the-counter medication lasts up to 24 hours per dose, according to ...

ACTIVE INGREDIENT: The active ingredient in Amazon Basic Care All Day Allergy is cetirizine hydrochloride, an antihistamine approved for the treatment of both indoor and outdoor allergy symptoms ...

For example, antihistamines like Claritin, Allegra, and Zyrtec are most ... antihistamines provide relief from symptoms for 24 hours, stopping itching and sneezing, and allergic conjunctivitis.

Nasacort 24HR Allergy Nasal Spray is the first ... He notes that almost all his patients report significant 24-hour improvement and complete relief from nasal congestion after three days of ...