Isoniazid vs Nitrofurantoin
National NHS prescribing compared (Prescription Cost Analysis)
Nitrofurantoin was dispensed 1,380.6× as often as Isoniazid in March 2026 — 361,710 items versus 262 in England.
262items
Isoniazid · March 2026
NHSBSA Prescription Cost Analysis
361,710items
Nitrofurantoin · March 2026
NHSBSA Prescription Cost Analysis
Figure 1. Isoniazid versus Nitrofurantoin: national items dispensed by month
▬ Isoniazid · ╌ Nitrofurantoin
Source: NHSBSA Prescription Cost Analysis, to March 2026
| Measure | Isoniazid | Nitrofurantoin |
|---|---|---|
| Items, March 2026 | 262 | 361,710 |
| Items, last 12 months | 3,246 | 4,429,854 |
| Net ingredient cost, March 2026 | £36,882 | £2,481,311 |
See the full profile for Isoniazid or Nitrofurantoin.