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Saturday, November 14, 2026Nov 14

EXPLAINER: New drug slows Alzheimer’s but comes with caveats

This Dec. 21, 2022 image provided by Eisai in January 2023, shows vials and packaging for their medication Leqembi. On Friday, Jan. 6, 2023, U.S. health officials approved Leqembi, a new Alzheimer’s drug that modestly slows the brain-robbing disease. The Food and Drug Administration granted the approval Friday for patients in the early stages of Alzheimer's. (Eisai via AP)
This Dec. 21, 2022 image provided by Eisai in January 2023, shows vials and packaging for their medication Leqembi. On Friday, Jan. 6, 2023, U.S. health officials approved Leqembi, a new Alzheimer’s drug that modestly slows the brain-robbing disease. The Food and Drug Administration granted the approval Friday for patients in the early stages of Alzheimer's. (Eisai via AP)

WASHINGTON (AP) — A new Alzheimer’s drug is hitting the market — the first with clear-cut evidence that it can slow, by several months, the mind-robbing disease.

It’s a long-needed new treatment, but experts also are voicing a lot of caution: The drug isn’t a cure, it’s only intended for early-stage patients, requires IV doses every two weeks, and comes with some safety concerns.

It’s not even clear just how noticeable that modest benefit will be in people’s everyday lives.

Still, “it’s a landmark,” said Dr. Richard Hodes, director of the National Institute on Aging. “It’s not enough, but it’s encouraging that there’s something we can do.”

Here are some things to know about the Food and Drug Administration’s approval of lecanemab, to be sold under the brand name Leqembi: