Drug Interaction Report

MiFEPRIStone may increase the blood levels of ado-trastuzumab emtansine. This can increase the risk and/or severity of side effects such as liver impairment, heart failure, nerve damage, and bleeding problems. You may not be able to take ado-trastuzumab emtansine during treatment with miFEPRIStone, or you may need a dose adjustment and/or more frequent monitoring by your doctor to safely use both medications. Your doctor may also be able to prescribe alternatives that do not interact. You should contact your doctor if you experience shortness of breath, coughing, swelling of the legs or ankles, sudden weight gain, palpitations, dizziness or loss of consciousness, as these may be early symptoms of heart failure. You should also seek immediate medical attention if you develop signs and symptoms of liver damage such as fever, chills, joint pain or swelling, unusual bleeding or bruising, skin rash, itching, loss of appetite, fatigue, nausea, vomiting, dark colored urine, light colored stools, and yellowing of the skin or eyes. 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.

Food increases the blood levels of this medication. If you are only receiving one or two doses, you may take it without regard to meals. However, if you are receiving the medication for long-term treatment, you should take it with food at the same time everyday to maintain consistent blood levels and effects. Avoid consuming grapefruit or grapefruit juice during treatment, as it may increase blood levels of the medication to undesirable levels and increase the risk of side effects, including headache, dizziness, fatigue, nausea, vomiting, cramping, diarrhea, hypokalemia (low blood potassium), fluid retention, swelling, and high blood pressure. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. 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.