Olanzapine vs Valproic acid
National NHS prescribing compared (Prescription Cost Analysis)
Olanzapine was dispensed 5.9× as often as Valproic acid in May 2026 — 217,708 items versus 37,098 in England.
217,708items
Olanzapine · May 2026
NHSBSA Prescription Cost Analysis
37,098items
Valproic acid · May 2026
NHSBSA Prescription Cost Analysis
Figure 1. Olanzapine versus Valproic acid: national items dispensed by month
▬ Olanzapine · ╌ Valproic acid
Source: NHSBSA Prescription Cost Analysis, to May 2026
| Measure | Olanzapine | Valproic acid |
|---|---|---|
| Items, May 2026 | 217,708 | 37,098 |
| Items, last 12 months | 2,693,982 | 469,924 |
| Net ingredient cost, May 2026 | £440,809 | £582,233 |
See the full profile for Olanzapine or Valproic acid.