- Any immunosuppresant drugs (prednisolone, azathioprine, leflunomide, methotrexate, Ciclosporin);
- Medicines which make the urine less acidic (e.g. potassium citrate mixture).
- Oral typhoid vaccine or any other vaccine;
- Amiodarone (for irregular heart rhythms)
- Ciclosporin (to prevent rejection after transplantation)
- Digoxin (to treat heart conditions)
- Phenytoin (to treat epilepsy)
- Pyrimethamine (to treat malaria)