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Independent analysis of NHS open data
PharmaInsight

Gabapentin vs Fosphenytoin sodium

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

Gabapentin was dispensed 295,385.5× as often as Fosphenytoin sodium in May 2026 — 590,771 items versus 2 in England.

590,771items

Gabapentin · May 2026

NHSBSA Prescription Cost Analysis

2items

Fosphenytoin sodium · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Gabapentin versus Fosphenytoin sodium: national items dispensed by month

▬ Gabapentin   ·   ╌ Fosphenytoin sodium

0 326k 653k Jan 2021 Nov 2021 Sep 2022 Jul 2023 Jun 2024 Apr 2025 May 2026 Fosphenytoin sod… 590,771 Jan 2021: 604k Feb 2021: 570k Mar 2021: 641k Apr 2021: 622k May 2021: 590k Jun 2021: 629k Jul 2021: 631k Aug 2021: 601k Sep 2021: 629k Oct 2021: 600k Nov 2021: 618k Dec 2021: 653k Jan 2022: 605k Feb 2022: 570k Mar 2022: 647k Apr 2022: 608k May 2022: 628k Jun 2022: 616k Jul 2022: 609k Aug 2022: 629k Sep 2022: 624k Oct 2022: 611k Nov 2022: 623k Dec 2022: 631k Jan 2023: 618k Feb 2023: 569k Mar 2023: 651k Apr 2023: 586k May 2023: 624k Jun 2023: 634k Jul 2023: 614k Aug 2023: 632k Sep 2023: 615k Oct 2023: 623k Nov 2023: 624k Dec 2023: 624k Feb 2024: 594k Mar 2024: 604k Apr 2024: 623k May 2024: 638k Jun 2024: 591k Jul 2024: 647k Aug 2024: 624k Sep 2024: 604k Oct 2024: 642k Nov 2024: 608k Dec 2024: 630k Jan 2025: 636k Feb 2025: 569k Mar 2025: 601k Apr 2025: 612k May 2025: 628k Jun 2025: 605k Jul 2025: 643k Aug 2025: 593k Sep 2025: 619k Oct 2025: 638k Nov 2025: 580k Dec 2025: 648k Jan 2026: 613k Feb 2026: 563k Mar 2026: 618k Apr 2026: 609k May 2026: 591k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Gabapentin versus Fosphenytoin sodium, May 2026
Measure Gabapentin Fosphenytoin sodium
Items, May 2026 590,771 2
Items, last 12 months 7,319,829 7
Net ingredient cost, May 2026 £1,550,400 £80

See the full profile for Gabapentin or Fosphenytoin sodium.