Hydrocodone bitartrate 10mg, chlorpheniramine maleate 8mg ... Chlorpheniramine is an antihistamine drug (H 1 receptor antagonist) that also possesses anticholinergic and sedative activity.
Combination treatment with betamethasone 1.0mg and loratadine 10mg was significantly better ... low-dose corticosteroids with and without an antihistamine in patients with acute exacerbations ...