Eli Lilly’s diabetes medication Mounjaro (tirzepatide) is seeing explosive sales growth, jumping from $187.3 million in the third quarter of 2022 to $1.4 billion in the same period this year. Conversely, sales of Lilly’s Trulicity, another diabetes drug, have declined, dipping from $1.85 billion in Q3 2022 to $1.67 billion in Q3 2023.
Mounjaro is selling so briskly that Lilly is having trouble making enough of it. The company is aiming to boost supply by recruiting a diverse portfolio of contract manufacturers. It plowed $450 million in its Research Triangle Park facility in North Carolina to support additional drug filling, device assembly, and packaging capacity. It also invested an additional $1.6 billion in new manufacturing sites in its home state of Indiana. Despite the efforts, the company notes that supply problems have led to “intermittent delays” in filling orders and tight supply of the medication throughout most of the third quarter…