Chlorphenamine
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| (3RS)-3-(4-chlorophenyl)-N,N-dimethyl- 3-(pyridin-2-yl)propan-1-amine | |
| CAS number 132-22-9 | ATC code R06AB04 |
| Chemical formula | C16H19ClN2 |
| Molecular weight | 274.8 |
| Bioavailability | 25-50% |
| Metabolism | hepatic |
| Elimination half-life | 6.3-23.1 hours |
| Excretion | renal |
| Pregnancy category | Category A (Australia) |
| Legal status | Schedule 3 (Australia) |
| Routes of administration | oral, intravenous |
Chlorphenamine (INN) or chlorpheniramine (USAN, former BAN), commonly marketed as its salt chlorphenamine maleate (CPM), is first-generation antihistamine used in the prevention of the symptoms of allergic conditions such as rhinitis and urticaria.