Drug Interaction Report

If you are currently being treated or have recently been treated with fam-trastuzumab deruxtecan, you should let your doctor know before using brewer's yeast. Depending on the dose and length of time you have been on fam-trastuzumab deruxtecan, you may be at risk for developing rare infections from exposure to products containing live bacteria or yeast. Depending on your overall health and medical condition, it may be advisable to avoid using brewer's yeast until your immune system has recovered from the effects of fam-trastuzumab deruxtecan. Talk to your doctor if you have any questions or concerns. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.