Drug Interactions between adagrasib and Duzallo

You should avoid consumption of grapefruit and grapefruit juice during approximately the first 8 days of treatment with adagrasib. During this time, grapefruit juice may increase the blood levels of adagrasib. This may increase the risk of side effects such as diarrhea, fatigue, musculoskeletal pain, hepatotoxicity, renal impairment, and an irregular heart rhythm that may be serious and potentially life-threatening. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or heart palpitations during treatment with adagrasib. 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.

Allopurinol should generally be taken after a meal to reduce side effects. If your daily dose exceeds 300 mg, you may also ask your healthcare provider if it is okay to divide the total daily dose into smaller doses given more frequently instead of once a day, as this may also reduce stomach upset that can happen with allopurinol. It is best to avoid or limit the consumption of alcohol, as it can increase drowsiness or other nervous system side effects of allopurinol. You should also avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. 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.