Diphenhydramine hydrochloride vs Promethazine hydrochloride
Promethazine hydrochloride was dispensed 105.7× as often as Diphenhydramine hydrochloride in March 2026 — 252,174 items versus 2,386 in England.
2,386items
Diphenhydramine hydrochloride · March 2026
NHSBSA Prescription Cost Analysis
252,174items
Promethazine hydrochloride · March 2026
NHSBSA Prescription Cost Analysis
Figure 1. Diphenhydramine hydrochloride versus Promethazine hydrochloride: national items dispensed by month
▬ Diphenhydramine hydrochloride · ╌ Promethazine hydrochloride
Source: NHSBSA Prescription Cost Analysis, to March 2026
| Measure | Diphenhydramine hydrochloride | Promethazine hydrochloride |
|---|---|---|
| Items, March 2026 | 2,386 | 252,174 |
| Items, last 12 months | 28,945 | 2,895,697 |
| Net ingredient cost, March 2026 | £12,041 | £466,476 |
See the full profile for Diphenhydramine hydrochloride or Promethazine hydrochloride.