Before the patient starts to take Cenex the doctor or pharmacist must be told about any other medication that the patient is taking or plans to take, including herbal medicines and natural products.
In particular the patient must tell the doctor if he/she is taking, have recently taken or might take: Dextromethorphan; ACE inhibitors, angiotensin II antagonists, beta blockers and diuretics; Fluconazole and rifampicin; Warfarin or other warfarin like medicines; Lithium; Other medicines to treat depression, sleep disorders, high blood pressure or an irregular heartbeat; Neuroleptics; Methotrexate; Carbamazepine; Barbiturates; Ciclosporin and tacrolimus.
Cenex can be taken with low dose acetylsalicylic acid (75mg or less daily). The doctor must be asked for advice before taking both medicines together.