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Independent analysis of NHS open data
PharmaInsight

Chlorambucil vs Mercaptopurine

National NHS prescribing compared (Prescription Cost Analysis)
Data updated May 2025

Mercaptopurine was dispensed 2,007.0× as often as Chlorambucil in May 2025 — 4,014 items versus 2 in England.

2items

Chlorambucil · May 2025

NHSBSA Prescription Cost Analysis

4,014items

Mercaptopurine · May 2025

NHSBSA Prescription Cost Analysis

Figure 1. Chlorambucil versus Mercaptopurine: national items dispensed by month

▬ Chlorambucil   ·   ╌ Mercaptopurine

0 3k 6k Jan 2021 Aug 2021 Mar 2022 Jan 2023 Aug 2023 Feb 2024 May 2025 Mercaptopurine 2 Jan 2021: 1 Mar 2021: 1 May 2021: 1 Jun 2021: 2 Jul 2021: 1 Aug 2021: 1 Sep 2021: 1 Dec 2021: 1 Jan 2022: 2 Feb 2022: 2 Mar 2022: 2 Apr 2022: 2 Jun 2022: 1 Aug 2022: 1 Nov 2022: 3 Jan 2023: 1 Feb 2023: 2 Apr 2023: 4 Jun 2023: 3 Jul 2023: 2 Aug 2023: 2 Sep 2023: 1 Nov 2023: 1 Dec 2023: 1 Jan 2024: 4 Feb 2024: 2 Mar 2024: 1 Apr 2024: 3 Nov 2024: 1 Jan 2025: 1 May 2025: 2

Source: NHSBSA Prescription Cost Analysis, to May 2025

Chlorambucil versus Mercaptopurine, May 2025
Measure Chlorambucil Mercaptopurine
Items, May 2025 2 4,014
Items, last 12 months 21 49,799
Net ingredient cost, May 2025 £24 £126,897

See the full profile for Chlorambucil or Mercaptopurine.