Tryptophan
Tryptophan was ranked 1268th of 1,796 medicines by items in May 2026, with 70 items, up 4.5% on a year earlier.
Dispensed in May 2026
Rolling 12 months
Net ingredient cost · May 2026
Figure 1. Tryptophan: national items dispensed by month
Source: NHSBSA Prescription Cost Analysis, to May 2026
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At a glance
- Therapeutic class Antidepressant drugs
- Presentations 1 shown
- Average cost / item £83.43
- Year on year Up 4.5% on a year earlier
Top presentations, May 2026
The individual products dispensed under Tryptophan this month.
| Presentation | BNF code | Items | Net ingredient cost |
|---|---|---|---|
| Optimax 500mg capsules (Esteve) | 0403040S0BBAEAI | 70 | £5,840 |
Source: NHSBSA Prescription Cost Analysis · to May 2026 OGL v3.0
Where Tryptophan is dispensed
The regions and dispensing practices with the highest Tryptophan volumes.
Top regions
Top dispensing practices
Regional volumes from NHSBSA Prescription Cost Analysis; practice volumes from NHS dispensing data.
Compare Tryptophan with
Other medicines in the same BNF section, by prescribing volume.
Download this data
The monthly series for Tryptophan 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.