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Independent analysis of NHS open data
PharmaInsight

Sodium fluoride vs Selenium

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

Sodium fluoride was dispensed 1,149.6× as often as Selenium in May 2026 — 117,261 items versus 102 in England.

117,261items

Sodium fluoride · May 2026

NHSBSA Prescription Cost Analysis

102items

Selenium · May 2026

NHSBSA Prescription Cost Analysis

Figure 1. Sodium fluoride versus Selenium: national items dispensed by month

▬ Sodium fluoride   ·   ╌ Selenium

0 68k 135k Jan 2021 Dec 2021 Oct 2022 Aug 2023 Jun 2024 Apr 2025 May 2026 Selenium 117,261 Jan 2021: 93k Feb 2021: 104k Mar 2021: 111k Apr 2021: 104k May 2021: 104k Jun 2021: 111k Jul 2021: 106k Aug 2021: 98k Sep 2021: 105k Nov 2021: 117k Dec 2021: 102k Jan 2022: 109k Feb 2022: 116k Mar 2022: 129k Apr 2022: 106k May 2022: 119k Jun 2022: 113k Jul 2022: 110k Aug 2022: 114k Sep 2022: 116k Oct 2022: 122k Nov 2022: 127k Dec 2022: 105k Jan 2023: 124k Feb 2023: 123k Mar 2023: 135k Apr 2023: 106k May 2023: 116k Jun 2023: 122k Jul 2023: 117k Aug 2023: 116k Sep 2023: 117k Oct 2023: 125k Nov 2023: 124k Dec 2023: 107k Jan 2024: 129k Feb 2024: 128k Mar 2024: 124k Apr 2024: 123k May 2024: 124k Jun 2024: 120k Jul 2024: 128k Aug 2024: 118k Sep 2024: 121k Oct 2024: 133k Nov 2024: 127k Dec 2024: 110k Jan 2025: 126k Feb 2025: 123k Mar 2025: 122k Apr 2025: 118k May 2025: 123k Jun 2025: 121k Jul 2025: 127k Aug 2025: 113k Sep 2025: 126k Oct 2025: 131k Nov 2025: 122k Dec 2025: 115k Jan 2026: 125k Feb 2026: 124k Mar 2026: 130k Apr 2026: 123k May 2026: 117k

Source: NHSBSA Prescription Cost Analysis, to May 2026

Sodium fluoride versus Selenium, May 2026
Measure Sodium fluoride Selenium
Items, May 2026 117,261 102
Items, last 12 months 1,474,213 1,307
Net ingredient cost, May 2026 £2,766,449 £6,955

See the full profile for Sodium fluoride or Selenium.