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Independent analysis of NHS open data
PharmaInsight

Ondansetron hydrochloride vs Ketamine hydrochloride

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

Ondansetron hydrochloride was dispensed 612.2× as often as Ketamine hydrochloride in May 2026 — 31,833 items versus 52 in England.

31,833items

Ondansetron hydrochloride · May 2026

NHSBSA Prescription Cost Analysis

52items

Ketamine hydrochloride · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Ondansetron hydrochloride versus Ketamine hydrochloride: national items dispensed by month

▬ Ondansetron hydrochloride   ·   ╌ Ketamine hydrochloride

0 17k 34k Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Ketamine hydroch… 31,833 Jan 2021: 23k Feb 2021: 21k Mar 2021: 23k Apr 2021: 23k May 2021: 22k Jun 2021: 24k Jul 2021: 24k Aug 2021: 23k Sep 2021: 25k Oct 2021: 24k Nov 2021: 25k Dec 2021: 26k Jan 2022: 24k Feb 2022: 22k Mar 2022: 26k Apr 2022: 24k May 2022: 25k Jun 2022: 25k Jul 2022: 25k Aug 2022: 26k Sep 2022: 26k Oct 2022: 26k Nov 2022: 26k Dec 2022: 26k Jan 2023: 25k Feb 2023: 24k Mar 2023: 28k Apr 2023: 24k May 2023: 26k Jun 2023: 27k Jul 2023: 27k Aug 2023: 28k Sep 2023: 27k Oct 2023: 26k Nov 2023: 27k Dec 2023: 29k Jan 2024: 29k Feb 2024: 27k Mar 2024: 28k Apr 2024: 29k May 2024: 29k Jun 2024: 28k Jul 2024: 30k Aug 2024: 29k Sep 2024: 29k Oct 2024: 30k Nov 2024: 29k Dec 2024: 31k Jan 2025: 32k Feb 2025: 28k Mar 2025: 30k Apr 2025: 30k May 2025: 31k Jun 2025: 30k Jul 2025: 33k Aug 2025: 30k Sep 2025: 32k Oct 2025: 34k Nov 2025: 31k Dec 2025: 34k Jan 2026: 34k Feb 2026: 30k Mar 2026: 33k Apr 2026: 33k May 2026: 32k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Ondansetron hydrochloride versus Ketamine hydrochloride, May 2026
Measure Ondansetron hydrochloride Ketamine hydrochloride
Items, May 2026 31,833 52
Items, last 12 months 385,675 711
Net ingredient cost, May 2026 £425,943 £3,851

See the full profile for Ondansetron hydrochloride or Ketamine hydrochloride.