Sometimes it is not safe to use certain medications at the same time. Some drugs can affect your blood levels of other drugs you take, which may increase side effects or make the medications less effective.
Your doctor may need to adjust the doses of any other medicines you take on a regular basis.
Many drugs can interact with teriflunomide. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here. Tell your doctor about all your current medicines and any medicine you start or stop using.
 Aubagio drug interactions (more detail)
