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Independent analysis of NHS open data
PharmaInsight

Spironolactone vs Triamterene

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

Spironolactone was dispensed 359,260.0× as often as Triamterene in May 2026 — 359,260 items versus 1 in England.

359,260items

Spironolactone · May 2026

NHSBSA Prescription Cost Analysis

1items

Triamterene · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Spironolactone versus Triamterene: national items dispensed by month

▬ Spironolactone   ·   ╌ Triamterene

0 188k 375k Jan 2021 Nov 2021 Sep 2022 Jul 2023 May 2024 Mar 2025 May 2026 Triamterene 359,260 Jan 2021: 234k Feb 2021: 220k Mar 2021: 248k Apr 2021: 242k May 2021: 232k Jun 2021: 250k Jul 2021: 253k Aug 2021: 243k Sep 2021: 253k Oct 2021: 243k Nov 2021: 253k Dec 2021: 267k Jan 2022: 251k Feb 2022: 236k Mar 2022: 268k Apr 2022: 254k May 2022: 266k Jun 2022: 260k Jul 2022: 261k Aug 2022: 272k Sep 2022: 268k Oct 2022: 267k Nov 2022: 274k Dec 2022: 277k Jan 2023: 274k Feb 2023: 254k Mar 2023: 291k Apr 2023: 264k May 2023: 284k Jun 2023: 292k Jul 2023: 286k Aug 2023: 295k Sep 2023: 289k Oct 2023: 296k Nov 2023: 299k Dec 2023: 298k Jan 2024: 306k Feb 2024: 290k Mar 2024: 297k Apr 2024: 308k May 2024: 318k Jun 2024: 300k Jul 2024: 328k Aug 2024: 320k Sep 2024: 312k Oct 2024: 332k Nov 2024: 320k Dec 2024: 331k Jan 2025: 336k Feb 2025: 303k Mar 2025: 323k Apr 2025: 328k May 2025: 342k Jun 2025: 334k Jul 2025: 358k Aug 2025: 334k Sep 2025: 351k Oct 2025: 363k Nov 2025: 336k Dec 2025: 375k Jan 2026: 359k Feb 2026: 334k Mar 2026: 367k Apr 2026: 364k May 2026: 359k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Spironolactone versus Triamterene, May 2026
Measure Spironolactone Triamterene
Items, May 2026 359,260 1
Items, last 12 months 4,235,084 20
Net ingredient cost, May 2026 £1,236,422 £39

See the full profile for Spironolactone or Triamterene.