Demand for glucagon-like peptide-1 weight-loss drugs — such as Ozempic, Zepbound and Wegovy — coupled with limited insurance coverage has fueled a risky but growing “gray” market for purchasing active ...

A new study in mice shows that tirzepatide—the active ingredient in the popular drugs Mounjaro and Zepbound—not only helps shed pounds but may also slow or reduce the growth of breast cancer tumors ...