Drug Interaction Report

Using panobinostat together with clarithromycin can increase the risk of an irregular heart rhythm that may be serious and potentially life-threatening, although it is a relatively rare side effect. You may be more susceptible if you have a heart condition called congenital long QT syndrome, other cardiac diseases, conduction abnormalities, or electrolyte disturbances (for example, magnesium or potassium loss due to severe or prolonged diarrhea or vomiting). In addition, clarithromycin can increase the blood levels of panobinostat. You may be more likely to experience other side effects such as nausea; vomiting; diarrhea; loss of appetite; fatigue; swelling in the arms or legs; heart problems (e.G., chest pain, heart failure); liver problems; 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. Talk to your doctor if you have any questions or concerns. 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. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or heart palpitations during treatment. 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, grapefruit juice, star fruit, pomegranate, or pomegranate juice during treatment with panobinostat. Doing so can increase blood levels of the medication. You may be more likely to experience side effects such as nausea; vomiting; diarrhea; loss of appetite; fatigue; swelling in the arms or legs; heart problems (e.G., chest pain, heart failure, irregular heartbeat); liver problems; 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. Talk to your doctor if you have any questions or concerns. 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.

Information for this minor interaction is available on the professional version.