Cyproheptadine hydrochloride vs Promethazine hydrochloride
National NHS prescribing compared (Prescription Cost Analysis)
Promethazine hydrochloride was dispensed 1,269.2× as often as Cyproheptadine hydrochloride in May 2026 — 234,806 items versus 185 in England.
185items
Cyproheptadine hydrochloride · May 2026
NHSBSA Prescription Cost Analysis
234,806items
Promethazine hydrochloride · May 2026
NHSBSA Prescription Cost Analysis
Figure 1. Cyproheptadine hydrochloride versus Promethazine hydrochloride: national items dispensed by month
▬ Cyproheptadine hydrochloride · ╌ Promethazine hydrochloride
Source: NHSBSA Prescription Cost Analysis, to May 2026
| Measure | Cyproheptadine hydrochloride | Promethazine hydrochloride |
|---|---|---|
| Items, May 2026 | 185 | 234,806 |
| Items, last 12 months | 2,181 | 2,912,461 |
| Net ingredient cost, May 2026 | £4,786 | £437,542 |
See the full profile for Cyproheptadine hydrochloride or Promethazine hydrochloride.