Zepbound contains the same active ingredient, tirzepatide, as Mounjaro, which is also made by Lilly and is FDA-approved to treat Type 2 diabetes. Some doctors also prescribe Mounjaro "off-label" for weight loss, as is permissible by the FDA.

Weight-loss medications like Wegovy and Zepbound are gaining popularity as millions turn to them for quick results and potential health benefits. While the outcomes can be positive, Consumer Reports warns that there are important considerations, especially for older adults, before starting these treatments.