Fulvestrant (Faslodex^®) is unlikely to interact with most other medications. However, be sure your healthcare provider knows if you are taking warfarin (Coumadin^®, Jantoven^®) before taking fulvestrant. Warfarin can increase the risk of bleeding and bruising due to the injection, which is given deep into the muscle. In general, women are not recommended to use fulvestrant while taking warfarin.

 

It is possible that not all of the drug interactions with fulvestrant are known at this time. Therefore, you should talk with your pharmacist or healthcare provider about any specific interactions that may apply to you.