Tryptophan
Central Nervous System
Antidepressant drugs
BNF 0403040S0
Data updated May 2026
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Tryptophan was ranked 1263rd of 1,792 medicines by items in May 2026, with 70 items, up 4.5% on a year earlier.
70items
+4.5%
Dispensed in May 2026
841items
Rolling 12 months
£5,840
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
What this is
Net ingredient cost is the list price before discounts and dispensing fees, not what the NHS finally pays.
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.