Alectinib Itraconazole
ModerateItraconazole is one of the strong CYP3A inhibitors. These are medicines that slow down a group of enzymes the body uses to process other drugs. The Alectinib leaflet says you should be monitored appropriately if you take Alectinib together with such a medicine. So if your doctor prescribes both, tell them about it and keep your check-ups. Don't stop or change either medicine on your own.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.