Fexofenadine hydrochloride inhibited antigen-induced bronchospasm in sensitized guinea pigs and histamine release from peritoneal mast cells in rats.
The clinical significance of these findings is unknown.
Chewable: 2 mg EExtended Release tab: 8 mg, 12 mg, 16 mg Tavist 12 Hour Allergy Tablets: Clemastine fumarate, USP 1.34 mg (equivalent to 1 mg clemastine).
Adults and children 12 years of age and older: take 1 tablet every 12 hours, not more than 2 tablets in 24 hours unless directed by a doctor.
Mechanism of Action Desloratadine is a long-acting tricyclic histamine antagonist with selective H1-receptor histamine antagonist activity.Mechanism of Action Cyproheptadine is a serotonin and histamine antagonist with anticholinergic and sedative effects.Antiserotonin and antihistamine drugs appear to compete with serotonin and histamine, respectively, for receptor sites.Histamine is a chemical that's normally produced in your body and stored in allergic cells, such as mast cells and basophils.If you have allergies, histamine is released from these cells in a response to allergens.Claritin-D 24 hour (10mg loratadine 240mg psuedophedrine) Dosing (Adult): one tablet po qd. Approval: 2013 Mechanism of Action: Carbinoxamine is an H1 receptor antagonist (antihistamine) that exhibits anticholinergic (drying) and sedative properties.