President Donald Trump announced Thursday that the U.S. will impose a 100% tariff on "any branded or patented Pharmaceutical Product" entering the country from Oct. 1.

The measure will not apply to companies building drug manufacturing plants in the U.S., Trump said. He added that the exemption covers projects where construction has started, including sites that have broken ground or are under construction.

"There will, therefore, be no Tariff on these Pharmaceutical Products if construction has started," Trump said in a post on Truth Social .

Branded or patented pharmaceutical products are drugs sold under trade names and protected by patents or other intellectual property, which block generic competition until those protections expire.

The announcement came as Trump also unveiled a

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