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Independent analysis of NHS open data
PharmaInsight

Cenobamate vs Sodium valproate

National NHS prescribing compared (Prescription Cost Analysis)
Data updated April 2026

Sodium valproate was dispensed 17.3× as often as Cenobamate in April 2026 — 168,875 items versus 9,738 in England.

9,738items

Cenobamate · April 2026

NHSBSA Prescription Cost Analysis

168,875items

Sodium valproate · April 2026

NHSBSA Prescription Cost Analysis

Figure 1. Cenobamate versus Sodium valproate: national items dispensed by month

▬ Cenobamate   ·   ╌ Sodium valproate

0 103k 206k Jan 2022 Sep 2022 May 2023 Jan 2024 Sep 2024 May 2025 Apr 2026 Sodium valproate 9,738 Jan 2022: 3 Feb 2022: 7 Mar 2022: 26 Apr 2022: 30 May 2022: 83 Jun 2022: 111 Jul 2022: 169 Aug 2022: 213 Sep 2022: 277 Oct 2022: 308 Nov 2022: 479 Dec 2022: 559 Jan 2023: 708 Feb 2023: 818 Mar 2023: 1k Apr 2023: 999 May 2023: 1k Jun 2023: 2k Jul 2023: 2k Aug 2023: 2k Sep 2023: 2k Oct 2023: 2k Nov 2023: 2k Dec 2023: 3k Jan 2024: 3k Feb 2024: 3k Mar 2024: 3k Apr 2024: 4k May 2024: 4k Jun 2024: 4k Jul 2024: 5k Aug 2024: 5k Sep 2024: 5k Oct 2024: 5k Nov 2024: 5k Dec 2024: 6k Jan 2025: 6k Feb 2025: 6k Mar 2025: 6k Apr 2025: 7k May 2025: 7k Jun 2025: 7k Jul 2025: 8k Aug 2025: 7k Sep 2025: 8k Oct 2025: 9k Nov 2025: 8k Dec 2025: 9k Jan 2026: 9k Feb 2026: 9k Mar 2026: 10k Apr 2026: 10k

Source: NHSBSA Prescription Cost Analysis, to April 2026

Cenobamate versus Sodium valproate, April 2026
Measure Cenobamate Sodium valproate
Items, April 2026 9,738 168,875
Items, last 12 months 101,768 2,074,346
Net ingredient cost, April 2026 £1,624,839 £2,668,018

See the full profile for Cenobamate or Sodium valproate.