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Image: Peter Dazeley/Getty Images About the Author Marygrace Taylor, Health Writer About the Reviewer Pieter Cohen, MD, Contributor Disclaimer: As a service to our readers, Harvard Health Publishing provides access to our library of archived content

Rarely, allergic reactions can occur, which is why a health assessment before starting treatment is so important

Just announced on December 22, 2025: Novo Nordisk has received FDA approval for the Wegovy pill - the first-ever oral GLP-1 medication for weight loss

When Controlled Supplementation May Be Necessary In some cases, taking extra folic acid and vitamin B12 might be needed during cancer treatment