Lamotrigine vs Primidone
National NHS prescribing compared (Prescription Cost Analysis)
Lamotrigine was dispensed 21.9× as often as Primidone in May 2026 — 376,214 items versus 17,176 in England.
376,214items
Lamotrigine · May 2026
NHSBSA Prescription Cost Analysis
17,176items
Primidone · May 2026
NHSBSA Prescription Cost Analysis
Figure 1. Lamotrigine versus Primidone: national items dispensed by month
▬ Lamotrigine · ╌ Primidone
Source: NHSBSA Prescription Cost Analysis, to May 2026
| Measure | Lamotrigine | Primidone |
|---|---|---|
| Items, May 2026 | 376,214 | 17,176 |
| Items, last 12 months | 4,485,415 | 202,766 |
| Net ingredient cost, May 2026 | £3,066,751 | £1,162,917 |
See the full profile for Lamotrigine or Primidone.