If you notice a lump in your neck, have trouble swallowing, or experience hoarseness or shortness of breath, tell your doctor. Wegovy has caused thyroid tumors in rodents, but it's not clear if it can do the same in people.
Also, if you or your family has ever had a type of thyroid cancer called medullary thyroid carcinoma (MTC) or if you have a condition called Multiple Endocrine Neoplasia syndrome type 2 (MEN 2), you should not use Wegovy.