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Independent analysis of NHS open data
PharmaInsight

Quetiapine vs Valproic acid

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

Quetiapine was dispensed 10.3× as often as Valproic acid in May 2026 — 383,782 items versus 37,098 in England.

383,782items

Quetiapine · May 2026

NHSBSA Prescription Cost Analysis

37,098items

Valproic acid · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Quetiapine versus Valproic acid: national items dispensed by month

▬ Quetiapine   ·   ╌ Valproic acid

0 207k 413k Jan 2021 Dec 2021 Oct 2022 Aug 2023 Jun 2024 Apr 2025 May 2026 Valproic acid 383,782 Jan 2021: 339k Feb 2021: 324k Mar 2021: 363k Apr 2021: 351k May 2021: 335k Jun 2021: 356k Jul 2021: 358k Aug 2021: 343k Oct 2021: 343k Nov 2021: 356k Dec 2021: 374k Jan 2022: 355k Feb 2022: 333k Mar 2022: 374k Apr 2022: 352k May 2022: 365k Jun 2022: 357k Jul 2022: 354k Aug 2022: 367k Sep 2022: 362k Oct 2022: 360k Nov 2022: 368k Dec 2022: 369k Jan 2023: 369k Feb 2023: 340k Mar 2023: 387k Apr 2023: 348k May 2023: 373k Jun 2023: 379k Jul 2023: 368k Aug 2023: 379k Sep 2023: 369k Oct 2023: 377k Nov 2023: 379k Dec 2023: 377k Jan 2024: 388k Feb 2024: 366k Mar 2024: 371k Apr 2024: 381k May 2024: 386k Jun 2024: 365k Jul 2024: 407k Aug 2024: 387k Sep 2024: 377k Oct 2024: 395k Nov 2024: 378k Dec 2024: 390k Jan 2025: 398k Feb 2025: 355k Mar 2025: 380k Apr 2025: 383k May 2025: 395k Jun 2025: 384k Jul 2025: 407k Aug 2025: 377k Sep 2025: 393k Oct 2025: 404k Nov 2025: 373k Dec 2025: 413k Jan 2026: 396k Feb 2026: 366k Mar 2026: 401k Apr 2026: 393k May 2026: 384k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Quetiapine versus Valproic acid, May 2026
Measure Quetiapine Valproic acid
Items, May 2026 383,782 37,098
Items, last 12 months 4,691,278 469,924
Net ingredient cost, May 2026 £4,101,012 £582,233

See the full profile for Quetiapine or Valproic acid.