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Independent analysis of NHS open data
PharmaInsight

Azathioprine vs Peginterferon beta

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

Azathioprine was dispensed 12,844.8× as often as Peginterferon beta in May 2026 — 51,379 items versus 4 in England.

51,379items

Azathioprine · May 2026

NHSBSA Prescription Cost Analysis

4items

Peginterferon beta · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Azathioprine versus Peginterferon beta: national items dispensed by month

▬ Azathioprine   ·   ╌ Peginterferon beta

0 35k 70k Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Peginterferon be… 51,379 Jan 2021: 67k Feb 2021: 62k Mar 2021: 69k Apr 2021: 67k May 2021: 63k Jun 2021: 68k Jul 2021: 68k Aug 2021: 65k Sep 2021: 68k Oct 2021: 64k Nov 2021: 66k Dec 2021: 70k Jan 2022: 65k Feb 2022: 61k Mar 2022: 68k Apr 2022: 64k May 2022: 67k Jun 2022: 64k Jul 2022: 65k Aug 2022: 65k Sep 2022: 65k Oct 2022: 64k Nov 2022: 65k Dec 2022: 65k Jan 2023: 64k Feb 2023: 59k Mar 2023: 67k Apr 2023: 60k May 2023: 64k Jun 2023: 65k Jul 2023: 63k Aug 2023: 64k Sep 2023: 62k Oct 2023: 63k Nov 2023: 63k Dec 2023: 63k Jan 2024: 63k Feb 2024: 59k Mar 2024: 59k Apr 2024: 61k May 2024: 62k Jun 2024: 58k Jul 2024: 63k Aug 2024: 59k Sep 2024: 58k Oct 2024: 60k Nov 2024: 57k Dec 2024: 59k Jan 2025: 60k Feb 2025: 53k Mar 2025: 56k Apr 2025: 56k May 2025: 57k Jun 2025: 55k Jul 2025: 58k Aug 2025: 53k Sep 2025: 55k Oct 2025: 56k Nov 2025: 52k Dec 2025: 57k Jan 2026: 55k Feb 2026: 49k Mar 2026: 53k Apr 2026: 52k May 2026: 51k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Azathioprine versus Peginterferon beta, May 2026
Measure Azathioprine Peginterferon beta
Items, May 2026 51,379 4
Items, last 12 months 646,880 188
Net ingredient cost, May 2026 £163,594 £6,540

See the full profile for Azathioprine or Peginterferon beta.