Two medicines, side by side
Chlorpheniramine vs desloratadine
Chlorpheniramine and desloratadine are both labeled for allergies. Drugs@FDA records approvals of chlorpheniramine since 1949 and of desloratadine since 2001. Pharmacies paid $0.0177 per allergy 4 mg tablet and $0.258 per desloratadine 5 mg tablet (NADAC, October 7, 2026); the strengths differ, so the two prices are not like for like.
Check it at the source: the chlorpheniramine FDA label on DailyMed (effective December 19, 2018); the desloratadine FDA label on DailyMed (effective May 17, 2025).
Highlights of the chlorpheniramine record
Chlorpheniramine (Chlor-Trimeton) · label of December 19, 2018
Used for
From the label: indicationstemporarily relieves the following symptoms due to hay fever or other upper respiratory allergies: sneezing runny nose itchy, watery eyes itching of the nose or throat
On the market
- Earliest approval on file
- July 13, 1949
- Generic labelers
- 2 labelers
- Pharmacy cost
- $0.0177 per tablet
Supply and safety
- Shortage
- No current entry
- Recalls
- 0
Highlights of the desloratadine record
Desloratadine (Clarinex) · label of May 17, 2025
Used for
From the label: indicationsCLARINEX is a histamine-1 (H1) receptor antagonist indicated for: Seasonal Allergic Rhinitis: relief of nasal and non-nasal symptoms in patients 2 years of age and older. ( 1.1 ) Perennial Allergic Rhinitis: relief of nasal and non-nasal symptoms in patients 6 months of age and older. […]
On the market
- Earliest approval on file
- December 21, 2001
- Generic labelers
- 9 labelers
- Pharmacy cost
- $0.258 per tablet
Supply and safety
- Shortage
- No current entry
- Recalls
- 1
Source: FDA drug labels via openFDA (Chlorpheniramine label of December 19, 2018, Desloratadine label of May 17, 2025); NDC Directory, Drugs@FDA, NADAC, FDA shortages and recalls (October 8, 2026)
How do chlorpheniramine and desloratadine differ on the record?
Both are in FDA's class histamine-1 receptor antagonists.
Generics: chlorpheniramine since 1972; desloratadine since 2010 (Drugs@FDA).
| Chlorpheniramine | Desloratadine | |
|---|---|---|
| Labeled for | Allergies | Allergies |
| Pharmacologic class | Histamine-1 Receptor Antagonist | Histamine-1 Receptor Antagonist |
| How it works (label) | n/a | Desloratadine is a long-acting tricyclic histamine antagonist with selective H 1 -receptor histamine antagonist activity. |
| Half-life (label) | n/a | pproximately 6% of subjects were poor metabolizers of desloratadine (defined as a subject with an AUC ratio of 3-hydroxydesloratadine to desloratadine less than 0.1, or a subject with a desloratadine half-life exceeding … |
| Earliest approval on file (Drugs@FDA) | July 13, 1949 | December 21, 2001 |
| First generic approved | May 9, 1972 | February 19, 2010 |
| Generic labelers (NDC) | 2 labelers | 9 labelers |
| Pharmacy cost (NADAC, each one's most listed form; strengths differ) | $0.0177 per tablet (Allergy 4 mg tablet) | $0.258 per tablet (Desloratadine 5 mg tablet) |
| 12-month price change | +8% | -13% |
| Boxed warning | No | No |
| Shortage now | No current entry | No current entry |
| Recalls recorded | 0 | 1 |
| FAERS reports (a report is not proof of cause; counts follow how widely a medicine is used) | 6,553 | 10,661 |
| DEA schedule | none | none |
Source: Drugs@FDA, FDA NDC Directory, CMS NADAC of October 7, 2026, FDA shortages and recalls, FAERS via openFDA (FDA files October 8, 2026)
What next?
- Alternatives to chlorpheniramine
- every medicine labeled for the same conditions