Drug Interaction Report

Brigatinib and metoprolol may have additive effects in lowering your heart rate. You may experience headache, dizziness, lightheadedness, fainting, and/or changes in pulse or heart beat. These side effects are most likely to be seen at the beginning of treatment, following a dose increase, or when treatment is restarted after an interruption. Let your doctor know if you develop these symptoms and they do not go away or they become troublesome. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both 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.

Food can enhance the levels of metoprolol in your body. You should take metoprolol at the same time each day, preferably with or immediately following meals. This will make it easier for your body to absorb the medication. Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking metoprolol. Metoprolol is only part of a complete program of treatment that also includes diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely.

Grapefruit juice can increase the blood levels of brigatinib. This may increase side effects such as nausea, vomiting, diarrhea, high blood pressure, high blood sugar, slow heart rate, visual disturbances, anemia, and infections. You should avoid consuming grapefruit and grapefruit juice during treatment with brigatinib. Seek medical attention if you develop paleness, fatigue, dizziness, fainting, fever, chills, diarrhea, sore throat, muscle aches, shortness of breath, blood in phlegm, weight loss, red or inflamed skin, body sores, or pain and burning during urination. Talk to your healthcare provider if you have any questions or concerns.

Using metoprolol together with multivitamin with minerals may decrease the effects of metoprolol. Separate the administration times of metoprolol and multivitamin with minerals by at least 2 hours. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both 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.