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Eli Lilly to build $3.5 billion Pennsylvania plant in US manufacturing push

By Thomson Reuters Jan 30, 2026 | 10:08 AM

WASHINGTON, Jan 30 (Reuters) – Eli Lilly announced on Friday that it will build a pharmaceutical manufacturing facility in Pennsylvania, its fourth new site ‍in an effort to expand U.S. production and bolster medical supply chains.

The $3.5 billion plant will make Lilly’s injectable weight-loss medications, including retatrutide, the company said in a statement. That next-generation obesity drug has outperformed Lilly’s blockbuster drug Zepbound.

Drugmakers ‌are rushing to expand U.S. production ‌as President Donald Trump has threatened to impose import tariffs on pharmaceutical products.

Companies including Lilly, Pfizer, and Merck have pledged billions in domestic investment to avoid penalties. Lilly said ​last year that it would invest over $27 billion in four new U.S. manufacturing sites, and has said ‍it will expand production at ​others.

Lilly, the world’s most valuable drugmaker ​by market value, has been racing against Danish rival Novo ‍Nordisk to meet surging demand for GLP-1 weight-loss drugs. The company plans to launch its much-anticipated weight-loss pill in several countries at a $150-a-month cash price as it works towards U.S. approval in the coming ‍months.

Construction at the Lehigh Valley site is expected to begin in 2026 and the plant will be operational in ‍2031, the company ‍said.

The site was selected from more ​than 300 applications and was chosen in ​part ⁠for its proximity to universities and ‌its existing infrastructure, the company said.

The investment is the largest by a life sciences company in Pennsylvania history and will create at least 850 new jobs, said Governor Josh Shapiro in a statement.

(Reporting by Leah Douglas in Washington;Editing ⁠by Nick Zieminski)