− amphetamine or amphetamine derivatives; − antibiotics (eg erythromycin, clarithromycin); − anticancer treatments (eg vincristine, vinblastine); − antidepressants (eg amitriptyline, desipramine, fluoxetine, imipramine, nortriptyline, paroxetine, sertraline, trazodone); − antifungals (eg ketoconazole, itraconazole); − antihistamines (eg loratidine, fexofenadine); − antiretroviral medicines including HIV-protease inhibitors and Non-nucleoside reverse transcriptase inhibitors( NNRTI); − anxiety medicine, buspirone; − asthma medicine, theophylline; − atovaquone, a medicine used to treat a certain type of pneumonia and malaria; − buprenorphine, a medicine used for the treatment of chronic pain; − bupropion, a medicine used to help you stop smoking; − epilepsy medicines (eg carbamazepine, divalproex, lamotrigine, phenytoin); − heart medicines (eg digoxin, disopyramide, mexiletine and calcium channel antagonists such as amlodipine, diltiazem and nifedipine); − immune system (eg cyclosporine, tacrolimus, everolimus); − morphine and morphine-like medicines used to treat severe pain (eg methadone, fentanyl); − sleeping pills (eg alprazolam, zolpidem) and also midazolam administered by injection; − tranquillisers (eg haloperidol, risperidone, thioridazine); − warfarin, that thins the blood.