U.S. President Donald Trump gestures as he takes questions from the press after signing an executive order on a deal that would divest TikTok's U.S. operations from ByteDance from its Chinese owner ByteDance, at the White House in Washington, D.C., U.S., September 25, 2025. REUTERS/Kevin Lamarque

WASHINGTON (Reuters) -The United States will impose a 100% tariff on imports of branded or patented pharmaceutical products from October 1, unless a pharmaceutical company is building a manufacturing plant in the U.S., President Donald Trump said on Thursday.

"There will, therefore, be no Tariff on these pharmaceutical products if construction has started," Trump said on Truth Social.

(Reporting by Jasper Ward and Ismail Shakil; Editing by Caitlin Webber)