Drug Interaction Report

Palbociclib may increase the blood levels of everolimus. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Let your doctor know if your condition changes or you experience new or worsening side effects of everolimus such as mouth ulcers, fever, infection, shortness of breath, diarrhea, dizziness, paleness, fainting, and/or unusual bleeding or bruising while taking these medications. 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.

Grapefruit juice can increase the blood levels and effects of everolimus. You should not drink grapefruit juice or eat grapefruits during your treatment with everolimus. Orange juice is not expected to interact.

Palbociclib oral capsules (Ibrance) should be taken with food to help with its absorption. Palbociclib oral tablets (Ibrance) may be taken with or without food. Do not consume grapefruit or grapefruit juice during treatment with palbociclib. Grapefruit and grapefruit juice can interact with palbociclib and increase the levels of palbociclib in your body. You may be more likely to experience side effects such as nausea; vomiting; diarrhea; loss of appetite; mouth sores; hair loss; weakness; pain, numbness, or tingling in the hands and feet; and impaired bone marrow function resulting in low numbers of different types of blood cells, which can increase the risk of anemia, bleeding problems, and infections. 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.