Eli Lilly developed the blockbuster weight-loss drug Zepbound and diabetes drug Mounjaro.
Eli Lilly and Company is an American pharmaceutical company founded in Indianapolis in 1876 by Colonel Eli Lilly. Its medicines have included insulin products, antibiotics, antidepressants, and treatments for cancer and autoimmune diseases. The company’s long history in diabetes research helped establish its position in metabolic medicine.
Mounjaro is the brand name for tirzepatide when prescribed for type 2 diabetes. Zepbound is the brand name for the same active ingredient when prescribed for chronic weight management. Tirzepatide acts on GIP and GLP-1 pathways, which distinguish it from medicines that target GLP-1 alone.
The two brand names are easy to confuse because they contain the same active ingredient but have different approved indications. Eli Lilly’s rapid growth in this area helped make it one of the world’s most valuable pharmaceutical companies by market capitalization.