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Independent analysis of NHS open data
PharmaInsight

Stiripentol vs Lamotrigine

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

Lamotrigine was dispensed 1,469.6× as often as Stiripentol in May 2026 — 376,214 items versus 256 in England.

256items

Stiripentol · May 2026

NHSBSA Prescription Cost Analysis

376,214items

Lamotrigine · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Stiripentol versus Lamotrigine: national items dispensed by month

▬ Stiripentol   ·   ╌ Lamotrigine

0 199k 397k Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Lamotrigine 256 Jan 2021: 250 Feb 2021: 222 Mar 2021: 233 Apr 2021: 226 May 2021: 226 Jun 2021: 207 Jul 2021: 262 Aug 2021: 215 Sep 2021: 235 Oct 2021: 228 Nov 2021: 258 Dec 2021: 240 Jan 2022: 248 Feb 2022: 245 Mar 2022: 237 Apr 2022: 245 May 2022: 247 Jun 2022: 240 Jul 2022: 254 Aug 2022: 234 Sep 2022: 243 Oct 2022: 251 Nov 2022: 228 Dec 2022: 245 Jan 2023: 243 Feb 2023: 241 Mar 2023: 257 Apr 2023: 208 May 2023: 253 Jun 2023: 247 Jul 2023: 273 Aug 2023: 234 Sep 2023: 235 Oct 2023: 246 Nov 2023: 232 Dec 2023: 266 Jan 2024: 230 Feb 2024: 237 Mar 2024: 249 Apr 2024: 273 May 2024: 252 Jun 2024: 259 Jul 2024: 290 Aug 2024: 220 Sep 2024: 258 Oct 2024: 274 Nov 2024: 244 Dec 2024: 236 Jan 2025: 273 Feb 2025: 239 Mar 2025: 259 Apr 2025: 228 May 2025: 246 Jun 2025: 253 Jul 2025: 286 Aug 2025: 247 Sep 2025: 264 Oct 2025: 275 Nov 2025: 259 Dec 2025: 287 Jan 2026: 257 Feb 2026: 249 Mar 2026: 284 Apr 2026: 247 May 2026: 256

Source: NHSBSA Prescription Cost Analysis, to May 2026

Stiripentol versus Lamotrigine, May 2026
Measure Stiripentol Lamotrigine
Items, May 2026 256 376,214
Items, last 12 months 3,164 4,485,415
Net ingredient cost, May 2026 £172,221 £3,066,751

See the full profile for Stiripentol or Lamotrigine.