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Independent analysis of NHS open data
PharmaInsight

Mirtazapine vs Duloxetine hydrochloride

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

Mirtazapine was dispensed 2.5× as often as Duloxetine hydrochloride in May 2026 — 1,137,415 items versus 447,879 in England.

1,137,415items

Mirtazapine · May 2026

NHSBSA Prescription Cost Analysis

447,879items

Duloxetine hydrochloride · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Mirtazapine versus Duloxetine hydrochloride: national items dispensed by month

▬ Mirtazapine   ·   ╌ Duloxetine hydrochloride

0 609k 1.2m Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Duloxetine hydro… 1,137,415 Jan 2021: 910k Feb 2021: 865k Mar 2021: 973k Apr 2021: 938k May 2021: 894k Jun 2021: 951k Jul 2021: 953k Aug 2021: 916k Sep 2021: 958k Oct 2021: 926k Nov 2021: 963k Dec 2021: 1m Jan 2022: 964k Feb 2022: 906k Mar 2022: 1m Apr 2022: 958k May 2022: 995k Jun 2022: 969k Jul 2022: 961k Aug 2022: 997k Sep 2022: 991k Oct 2022: 985k Nov 2022: 1m Dec 2022: 1m Jan 2023: 1m Feb 2023: 947k Mar 2023: 1.1m Apr 2023: 968k May 2023: 1m Jun 2023: 1m Jul 2023: 1m Aug 2023: 1.1m Sep 2023: 1m Oct 2023: 1.1m Nov 2023: 1.1m Dec 2023: 1.1m Jan 2024: 1.1m Feb 2024: 1m Mar 2024: 1.1m Apr 2024: 1.1m May 2024: 1.1m Jun 2024: 1m Jul 2024: 1.1m Aug 2024: 1.1m Sep 2024: 1.1m Oct 2024: 1.1m Nov 2024: 1.1m Dec 2024: 1.1m Jan 2025: 1.2m Feb 2025: 1m Mar 2025: 1.1m Apr 2025: 1.1m May 2025: 1.1m Jun 2025: 1.1m Jul 2025: 1.2m Aug 2025: 1.1m Sep 2025: 1.2m Oct 2025: 1.2m Nov 2025: 1.1m Dec 2025: 1.2m Jan 2026: 1.2m Feb 2026: 1.1m Mar 2026: 1.2m Apr 2026: 1.2m May 2026: 1.1m

Source: NHSBSA Prescription Cost Analysis, to May 2026

Mirtazapine versus Duloxetine hydrochloride, May 2026
Measure Mirtazapine Duloxetine hydrochloride
Items, May 2026 1,137,415 447,879
Items, last 12 months 13,842,931 5,235,734
Net ingredient cost, May 2026 £1,218,242 £1,479,396

See the full profile for Mirtazapine or Duloxetine hydrochloride.