Chlorpheniramine is an over-the-counter medication used to relieve symptoms of colds and allergies including sneezing, runny nose, itchy and watery eyes. Chlorpheniramine is a first generation antihistamine that can easily cross the blood-brain barrier, causing drowsiness as a side effect, which the...
▪Drug ClassAllergy; Antihistamine, 1st-generation ▪IndicationsAllergic rhinitis, anaphylaxis ▪MechanismAntagonizes cholinergic (H1) receptors ▪Dosage with Qualifiers Allergic rhinitis—4mg PO q4-6h Anaphylaxis—5-20mg SC/IM q6-12h prn