Top 10 savings for price-per-unit switching by British National Formulary (BNF) chemical name
| BNF chemical code | Chemical name | Potential saving per year (£) |
| 0601060D0 | Glucose blood testing reagents | 11 969 900 |
| 0302000N0 | Fluticasone propionate (Inh) | 9 279 710 |
| 0403040W0 | Venlafaxine | 7 699 071 |
| 0302000K0 | Budesonide | 6 631 387 |
| 0408010A0 | Levetiracetam | 5 624 539 |
| 0407010F0 | Co-codamol (codeine phosphate/paracetamol) | 5 203 179 |
| 0105010B0 | Mesalazine (systemic) | 5 190 272 |
| 0704020N0 | Tolterodine | 5 013 993 |
| 0408010H0 | Lamotrigine | 4 996 309 |
| 0302000K0 | Budesonide | 4 926 375 |