Chlorphenamine maleate vs Promethazine hydrochloride
National NHS prescribing compared (Prescription Cost Analysis)
Promethazine hydrochloride was dispensed 3.6× as often as Chlorphenamine maleate in May 2026 — 234,806 items versus 66,137 in England.
66,137items
Chlorphenamine maleate · May 2026
NHSBSA Prescription Cost Analysis
234,806items
Promethazine hydrochloride · May 2026
NHSBSA Prescription Cost Analysis
Figure 1. Chlorphenamine maleate versus Promethazine hydrochloride: national items dispensed by month
▬ Chlorphenamine maleate · ╌ Promethazine hydrochloride
Source: NHSBSA Prescription Cost Analysis, to May 2026
| Measure | Chlorphenamine maleate | Promethazine hydrochloride |
|---|---|---|
| Items, May 2026 | 66,137 | 234,806 |
| Items, last 12 months | 763,427 | 2,912,461 |
| Net ingredient cost, May 2026 | £432,963 | £437,542 |
See the full profile for Chlorphenamine maleate or Promethazine hydrochloride.