 The Food and Drug Administration is approving a new drug for people in the early stages of Alzheimer's disease. Casunla is the drug's brand name. It's made by Eli Lilly. The FDA's approval comes less than a month after a panel of advisors backed the medication unanimously. The FDA says Casunla clears clumps of protein associated with Alzheimer's disease from the brain. Once MRI scans show those clumps are gone, the medicine can be stopped.