Drug Interaction Report

Dabrafenib may reduce the blood levels of glasdegib, which may make the medication less effective in some cases. 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.

Food may delay and reduce the absorption of dabrafenib, which may lead to lower blood levels of the medication and possibly reduced effectiveness. You should take dabrafenib at least 1 hour before or 2 hours after a meal.

Grapefruit and grapefruit juice may increase the blood levels and effects of glasdegib. This can increase the risk of serious side effects such as an irregular heart rhythm, inflammation and ulceration of the digestive tract, low red or white blood cells, fever, low platelet levels, bleeding, and swelling. You should avoid consumption of grapefruit and grapefruit juice during treatment with glasdegib. Otherwise, you may need a dose adjustment and/or more frequent monitoring by your doctor to safely use this medication. 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.