Promethazine hydrochloride vs House dust mites allergen extract
Promethazine hydrochloride was dispensed 2,033.7× as often as House dust mites allergen extract in March 2026 — 252,174 items versus 124 in England.
252,174items
Promethazine hydrochloride · March 2026
NHSBSA Prescription Cost Analysis
124items
House dust mites allergen extract · March 2026
NHSBSA Prescription Cost Analysis
Figure 1. Promethazine hydrochloride versus House dust mites allergen extract: national items dispensed by month
▬ Promethazine hydrochloride · ╌ House dust mites allergen extract
Source: NHSBSA Prescription Cost Analysis, to March 2026
| Measure | Promethazine hydrochloride | House dust mites allergen extract |
|---|---|---|
| Items, March 2026 | 252,174 | 124 |
| Items, last 12 months | 2,895,697 | 1,056 |
| Net ingredient cost, March 2026 | £466,476 | £13,182 |
See the full profile for Promethazine hydrochloride or House dust mites allergen extract.