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Independent analysis of NHS open data
PharmaInsight

Lacosamide vs Sodium valproate

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

Sodium valproate was dispensed 5.7× as often as Lacosamide in May 2026 — 163,094 items versus 28,536 in England.

28,536items

Lacosamide · May 2026

NHSBSA Prescription Cost Analysis

163,094items

Sodium valproate · May 2026

NHSBSA Prescription Cost Analysis

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

▬ Lacosamide   ·   ╌ Sodium valproate

0 103k 206k Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Sodium valproate 28,536 Jan 2021: 16k Feb 2021: 15k Mar 2021: 17k Apr 2021: 17k May 2021: 16k Jun 2021: 17k Jul 2021: 18k Aug 2021: 17k Sep 2021: 18k Oct 2021: 17k Nov 2021: 18k Dec 2021: 19k Jan 2022: 18k Feb 2022: 17k Mar 2022: 19k Apr 2022: 18k May 2022: 19k Jun 2022: 19k Jul 2022: 19k Aug 2022: 20k Sep 2022: 19k Oct 2022: 19k Nov 2022: 20k Dec 2022: 20k Jan 2023: 21k Feb 2023: 19k Mar 2023: 21k Apr 2023: 20k May 2023: 21k Jun 2023: 22k Jul 2023: 21k Aug 2023: 22k Sep 2023: 22k Oct 2023: 22k Nov 2023: 22k Dec 2023: 22k Jan 2024: 23k Feb 2024: 22k Mar 2024: 22k Apr 2024: 24k May 2024: 24k Jun 2024: 23k Jul 2024: 25k Aug 2024: 24k Sep 2024: 24k Oct 2024: 25k Nov 2024: 25k Dec 2024: 26k Jan 2025: 26k Feb 2025: 23k Mar 2025: 25k Apr 2025: 25k May 2025: 27k Jun 2025: 26k Jul 2025: 28k Aug 2025: 26k Sep 2025: 28k Oct 2025: 29k Nov 2025: 27k Jan 2026: 29k Feb 2026: 27k Mar 2026: 29k Apr 2026: 29k May 2026: 29k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Lacosamide versus Sodium valproate, May 2026
Measure Lacosamide Sodium valproate
Items, May 2026 28,536 163,094
Items, last 12 months 332,844 2,055,398
Net ingredient cost, May 2026 £297,652 £2,585,679

See the full profile for Lacosamide or Sodium valproate.