Sodium phenylbutyrate
Sodium phenylbutyrate was ranked 1717th of 1,796 medicines by items in May 2026, with 1 items, down 80.0% on a year earlier.
Dispensed in May 2026
Rolling 12 months
Net ingredient cost · May 2026
Figure 1. Sodium phenylbutyrate: national items dispensed by month
Source: NHSBSA Prescription Cost Analysis, to May 2026
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At a glance
- Therapeutic class Metabolic disorders
- Presentations 1 shown
- Average cost / item £493.00
- Year on year Down 80.0% on a year earlier
Top presentations, May 2026
The individual products dispensed under Sodium phenylbutyrate this month.
| Presentation | BNF code | Items | Net ingredient cost |
|---|---|---|---|
| Ammonaps 500mg tablets | 0908010P0BCAAAG | 1 | £493 |
Source: NHSBSA Prescription Cost Analysis · to May 2026 OGL v3.0
Where Sodium phenylbutyrate is dispensed
The regions and dispensing practices with the highest Sodium phenylbutyrate volumes.
Top regions
Top dispensing practices
Regional volumes from NHSBSA Prescription Cost Analysis; practice volumes from NHS dispensing data.
Compare Sodium phenylbutyrate with
Other medicines in the same BNF section, by prescribing volume.
Download this data
The monthly series for Sodium phenylbutyrate is in this page's CSV. For the ranked national series across every medicine, with the method and caveats documented, see the most-prescribed medicines dataset in our open data catalogue.