Amitriptyline hydrochloride vs Tryptophan
National NHS prescribing compared (Prescription Cost Analysis)
Amitriptyline hydrochloride was dispensed 18,549.3× as often as Tryptophan in April 2026 — 1,391,201 items versus 75 in England.
1,391,201items
Amitriptyline hydrochloride · April 2026
NHSBSA Prescription Cost Analysis
75items
Tryptophan · April 2026
NHSBSA Prescription Cost Analysis
Figure 1. Amitriptyline hydrochloride versus Tryptophan: national items dispensed by month
▬ Amitriptyline hydrochloride · ╌ Tryptophan
Source: NHSBSA Prescription Cost Analysis, to April 2026
| Measure | Amitriptyline hydrochloride | Tryptophan |
|---|---|---|
| Items, April 2026 | 1,391,201 | 75 |
| Items, last 12 months | 16,601,897 | 838 |
| Net ingredient cost, April 2026 | £1,479,770 | £4,862 |
See the full profile for Amitriptyline hydrochloride or Tryptophan.