Drug Interaction Report

Repotrectinib may reduce the blood levels of naloxegol, which may make the medication less effective in treating your condition. Contact your doctor if your symptoms worsen or your condition changes. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring 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.

Do not consume grapefruit or grapefruit juice during treatment with naloxegol. Grapefruit juice can significantly increase the blood levels of naloxegol. You may be more likely to experience side effects and withdrawal symptoms such as sweating, tearing, runny nose, chills, diarrhea, abdominal pain, anxiety, insomnia, irritability, restlessness, and yawning. Taking naloxegol with food can also increase its absorption into the blood stream. Therefore, you should take it on an empty stomach at least 1 hour before or 2 hours after a meal. 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.

Consumption of grapefruit, grapefruit juice, and supplements that contain grapefruit should be avoided during treatment with repotrectinib as they may increase the blood levels of repotrectinib. This may increase the risk and/or severity of side effects such as dizziness, tiredness, muscle pain, nausea, change in your sense of taste, feeling numbness or tingling in your arms or legs, constipation, trouble with balance, shortness of breath, problems with thinking such as forgetfulness or confusion and hallucinations, as well as more serious side effects such severe or life-threatening inflammation of the lungs and liver injury. Talk to your doctor if you have any questions or concerns. Your doctor may be able to provide alternatives that do not interact. 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.