Amitriptyline hydrochloride vs Tryptophan
National NHS prescribing compared (Prescription Cost Analysis)
Amitriptyline hydrochloride was dispensed 22,189.4× as often as Tryptophan in March 2026 — 1,420,123 items versus 64 in England.
1,420,123items
Amitriptyline hydrochloride · March 2026
NHSBSA Prescription Cost Analysis
64items
Tryptophan · March 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 March 2026
| Measure | Amitriptyline hydrochloride | Tryptophan |
|---|---|---|
| Items, March 2026 | 1,420,123 | 64 |
| Items, last 12 months | 16,560,644 | 829 |
| Net ingredient cost, March 2026 | £1,545,559 | £4,884 |
See the full profile for Amitriptyline hydrochloride or Tryptophan.