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Independent analysis of NHS open data
PharmaInsight

Promethazine hydrochloride vs Benralizumab

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

Promethazine hydrochloride was dispensed 117,403.0× as often as Benralizumab in May 2026 — 234,806 items versus 2 in England.

234,806items

Promethazine hydrochloride · May 2026

NHSBSA Prescription Cost Analysis

2items

Benralizumab · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Promethazine hydrochloride versus Benralizumab: national items dispensed by month

▬ Promethazine hydrochloride   ·   ╌ Benralizumab

0 127k 255k Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Benralizumab 234,806 Jan 2021: 156k Feb 2021: 150k Mar 2021: 167k Apr 2021: 156k May 2021: 150k Jun 2021: 161k Jul 2021: 161k Aug 2021: 156k Sep 2021: 167k Oct 2021: 161k Nov 2021: 170k Dec 2021: 174k Jan 2022: 177k Feb 2022: 167k Mar 2022: 186k Apr 2022: 172k May 2022: 179k Jun 2022: 173k Jul 2022: 171k Aug 2022: 176k Sep 2022: 183k Oct 2022: 181k Nov 2022: 192k Dec 2022: 183k Jan 2023: 197k Feb 2023: 185k Mar 2023: 209k Apr 2023: 184k May 2023: 198k Jun 2023: 201k Jul 2023: 198k Aug 2023: 203k Sep 2023: 201k Oct 2023: 211k Nov 2023: 213k Dec 2023: 210k Jan 2024: 227k Feb 2024: 214k Mar 2024: 217k Apr 2024: 221k May 2024: 225k Jun 2024: 210k Jul 2024: 228k Aug 2024: 221k Sep 2024: 221k Oct 2024: 239k Nov 2024: 228k Dec 2024: 232k Jan 2025: 248k Feb 2025: 222k Mar 2025: 232k May 2025: 236k Jun 2025: 231k Jul 2025: 245k Aug 2025: 228k Sep 2025: 243k Oct 2025: 253k Nov 2025: 234k Dec 2025: 255k Jan 2026: 255k Feb 2026: 236k Mar 2026: 252k Apr 2026: 246k May 2026: 235k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Promethazine hydrochloride versus Benralizumab, May 2026
Measure Promethazine hydrochloride Benralizumab
Items, May 2026 234,806 2
Items, last 12 months 2,912,461 20
Net ingredient cost, May 2026 £437,542 £3,910

See the full profile for Promethazine hydrochloride or Benralizumab.