Olanzapine vs Promazine hydrochloride
National NHS prescribing compared (Prescription Cost Analysis)
Olanzapine was dispensed 33.1× as often as Promazine hydrochloride in May 2026 — 217,708 items versus 6,583 in England.
217,708items
Olanzapine · May 2026
NHSBSA Prescription Cost Analysis
6,583items
Promazine hydrochloride · May 2026
NHSBSA Prescription Cost Analysis
Figure 1. Olanzapine versus Promazine hydrochloride: national items dispensed by month
▬ Olanzapine · ╌ Promazine hydrochloride
Source: NHSBSA Prescription Cost Analysis, to May 2026
| Measure | Olanzapine | Promazine hydrochloride |
|---|---|---|
| Items, May 2026 | 217,708 | 6,583 |
| Items, last 12 months | 2,693,982 | 87,780 |
| Net ingredient cost, May 2026 | £440,809 | £442,181 |
See the full profile for Olanzapine or Promazine hydrochloride.