All GLP-1 drugs, which include popular brands like Ozempic and Wegovy, will soon carry new labels warning people taking the medications about a possible side effect that could lead to permanent vision loss.

Why you should care:

The Food and Drug Administration explained the labels will alert patients to a potential eye condition known as non-arteritic anterior ischemic optic neuropathy. While doctors do not know what causes the rare condition, it can lead to decreased blood flow through the optic nerve.