Zonisamide vs Sodium valproate
National NHS prescribing compared (Prescription Cost Analysis)
Sodium valproate was dispensed 9.4× as often as Zonisamide in May 2026 — 163,094 items versus 17,329 in England.
17,329items
Zonisamide · May 2026
NHSBSA Prescription Cost Analysis
163,094items
Sodium valproate · May 2026
NHSBSA Prescription Cost Analysis
Figure 1. Zonisamide versus Sodium valproate: national items dispensed by month
▬ Zonisamide · ╌ Sodium valproate
Source: NHSBSA Prescription Cost Analysis, to May 2026
| Measure | Zonisamide | Sodium valproate |
|---|---|---|
| Items, May 2026 | 17,329 | 163,094 |
| Items, last 12 months | 212,121 | 2,058,845 |
| Net ingredient cost, May 2026 | £429,049 | £2,585,679 |
See the full profile for Zonisamide or Sodium valproate.