Riboxen Ribociclib Ritonavir
ModerateRitonavir strongly slows down the liver enzyme (CYP3A4) that breaks down Ribociclib, so the body clears Ribociclib more slowly. This raises the level of Ribociclib in the blood. Kisqali is the brand name of Ribociclib. A higher level can make its side effects more likely or stronger.
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.