Promethazine hydrochloride vs White Birch pollen allergen extract
National NHS prescribing compared (Prescription Cost Analysis)
Promethazine hydrochloride was dispensed 14,482.4× as often as White Birch pollen allergen extract in April 2026 — 246,200 items versus 17 in England.
246,200items
Promethazine hydrochloride · April 2026
NHSBSA Prescription Cost Analysis
17items
White Birch pollen allergen extract · April 2026
NHSBSA Prescription Cost Analysis
Figure 1. Promethazine hydrochloride versus White Birch pollen allergen extract: national items dispensed by month
▬ Promethazine hydrochloride · ╌ White Birch pollen allergen extract
Source: NHSBSA Prescription Cost Analysis, to April 2026
| Measure | Promethazine hydrochloride | White Birch pollen allergen extract |
|---|---|---|
| Items, April 2026 | 246,200 | 17 |
| Items, last 12 months | 2,913,211 | 97 |
| Net ingredient cost, April 2026 | £472,333 | £2,083 |
See the full profile for Promethazine hydrochloride or White Birch pollen allergen extract.