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Independent analysis of NHS open data
PharmaInsight

Azathioprine vs Sirolimus

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

Azathioprine was dispensed 169.4× as often as Sirolimus in April 2026 — 52,349 items versus 309 in England.

52,349items

Azathioprine · April 2026

NHSBSA Prescription Cost Analysis

309items

Sirolimus · April 2026

NHSBSA Prescription Cost Analysis

Figure 1. Azathioprine versus Sirolimus: national items dispensed by month

▬ Azathioprine   ·   ╌ Sirolimus

0 35k 70k Jan 2021 Oct 2021 Jul 2022 Apr 2023 Jan 2024 Oct 2024 Apr 2026 Sirolimus 52,349 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 Nov 2025: 52k Dec 2025: 57k Jan 2026: 55k Feb 2026: 49k Mar 2026: 53k Apr 2026: 52k

Source: NHSBSA Prescription Cost Analysis, to April 2026

Azathioprine versus Sirolimus, April 2026
Measure Azathioprine Sirolimus
Items, April 2026 52,349 309
Items, last 12 months 652,075 3,345
Net ingredient cost, April 2026 £172,204 £43,616

See the full profile for Azathioprine or Sirolimus.