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Independent analysis of NHS open data
PharmaInsight

Glycerol phenylbutyrate vs Betaine anhydrous

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

Betaine anhydrous was dispensed 9.0× as often as Glycerol phenylbutyrate in January 2026 — 9 items versus 1 in England.

1items

Glycerol phenylbutyrate · January 2026

NHSBSA Prescription Cost Analysis

9items

Betaine anhydrous · January 2026

NHSBSA Prescription Cost Analysis

Figure 1. Glycerol phenylbutyrate versus Betaine anhydrous: national items dispensed by month

▬ Glycerol phenylbutyrate   ·   ╌ Betaine anhydrous

0 13.5 27 Jul 2023 Nov 2023 Apr 2024 May 2025 Jan 2026 Betaine anhydrou… 1 Jul 2023: 8 Sep 2023: 1 Oct 2023: 1 Nov 2023: 1 Jan 2024: 6 Feb 2024: 1 Apr 2024: 1 May 2024: 2 Apr 2025: 1 May 2025: 1 Jul 2025: 1 Aug 2025: 3 Oct 2025: 2 Nov 2025: 1 Jan 2026: 1

Source: NHSBSA Prescription Cost Analysis, to January 2026

Glycerol phenylbutyrate versus Betaine anhydrous, January 2026
Measure Glycerol phenylbutyrate Betaine anhydrous
Items, January 2026 1 9
Items, last 12 months 21 99
Net ingredient cost, January 2026 £1,932 £5,510

See the full profile for Glycerol phenylbutyrate or Betaine anhydrous.