Drug Interactions between ruxolitinib and telotristat

Do not consume grapefruit or grapefruit juice during treatment with ruxolitinib unless directed otherwise by your doctor. Grapefruit juice can increase the blood levels of ruxolitinib. This may increase the risk of side effects that affect your bone marrow function, resulting in low numbers of different types of blood cells. You may be more likely to develop anemia, bleeding problems, or infections. Contact your doctor if you experience potential signs and symptoms of these conditions such as paleness, fatigue, dizziness, fainting, unusual bleeding or bruising, fever, chills, sore throat, body aches, or other flu-like symptoms. 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 absorption of telotristat ethyl. To ensure adequate blood levels of the medication, telotristat ethyl should be administered with food or a meal.