| Therapeutic group | Generic name |
| Antiarrhythmic | Flecainide |
| Propafenon | |
| Analgesic | Codeine |
| Oxycodone | |
| Tramadol | |
| Anticancer | Capecitabine |
| Fluorouracil | |
| Irinotecan | |
| Tamoxifen | |
| Tegafur | |
| Anticoagulation | Acenocoumarol |
| Clopidogrel | |
| Phenprocoumon | |
| Warfarin | |
| Antidepressant (SSRI) | Paroxetine |
| Sertraline | |
| Venlafaxine | |
| Citalopram | |
| Escitalopram | |
| Antidepressant (TCA) | Amitriptyline |
| Clomipramine | |
| Doxepine | |
| Imipramine | |
| Nortriptyline | |
| Antiepileptic | Carbamazepine |
| Phenytoin | |
| Antihypertensive | Metoprolol |
| Anti-infective | Efavirenz |
| Flucloxacillin | |
| Voriconazole | |
| Antipsychotic | Aripiprazole |
| Clozapine | |
| Haloperidol | |
| Pimozide | |
| Zuclopenthixol | |
| Cholesterol – lowering | Atorvastatin |
| Simvastatin | |
| Immuno – suppressive | Azathioprine |
| Mercaptopurine | |
| Tacrolimus | |
| Thioguanine | |
| Other | Atomoxetine |
| Oestrogen containing drugs * |
* only if a 2nd prescription, not for primary inclusion