Drug Interactions between Ingrezza and Latuda

Avoid consuming grapefruit or grapefruit juice during treatment with lurasidone, as it may increase blood levels of the medication. This can increase the risk of side effects such as Parkinson-like symptoms, abnormal muscle movements, seizures, high blood sugar, diabetes, high cholesterol, weight gain, sex hormone irregularities, and heat-related disorders such as heat intolerance or heat stroke. In addition, you may be more likely to experience side effects associated with low blood pressure such as dizziness, lightheadedness, headache, flushing, fainting, and heart palpitations. You should also avoid the use of alcohol while being treated with lurasidone. Alcohol can increase the nervous system and blood-pressure lowering effects of lurasidone. You may experience increased drowsiness, dizziness, difficulty concentrating, and impairment in thinking and judgment. Talk to your doctor or pharmacist if you have any questions or concerns. Lurasidone should be taken with food consisting of at least 350 calories. Avoid driving or operating hazardous machinery until you know how the medication affects you, and use caution when getting up from a sitting or lying position.

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Grapefruit and grapefruit juice may increase the blood levels and effects of valbenazine, such as drowsiness and an irregular heart rhythm problem called QT prolongation. Irregular heart rhythm problems 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). Talk to your doctor if you have questions or concerns. Do not add grapefruit products to your diet, or increase or decrease the amount currently in your diet without first talking to your doctor. You may need a dose adjustment of valbenazine or more frequent monitoring by your doctor to safely use both valbenazine and grapefruit products. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or heart palpitations during treatment with 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.

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