5 questions experts have about Trump's pharma tariffs 

For people who rely on certain prescription drugs, including weight loss, asthma and cancer medications, President Donald Trump’s post announcing 100% tariffs on foreign brand-name drugs offers little clarity on when — or if — medications might see price hikes.

For people who rely on certain prescription drugs, including weight loss, asthma and cancer medications, President Donald Trump’s post announcing 100% tariffs on foreign brand-name drugs offers little clarity on when — or if — medications might see price hikes.

“Starting October 1st, 2025, we will be imposing a 100% Tariff on any branded or patented Pharmaceutical Product, unless a Company IS BUILDING their Pharmaceutical Manufacturing Plant in America,” Trump said on Truth Social late Thursday. “‘IS BUILDING’ will be defined as, ‘breaking ground’ and/or ‘under construction.’ There will, therefore, be no Tariff on these Pharmaceutical Products if construction has started.”

Experts say Trump’s post raises a lot of questions. Here are five major ones.

Trump’s post doesn’t specify whether brand-name drugmakers with an existing U.S. plant would be exempt, whether that exemption would include all their products, or whether it would only be for the drugs manufactured at the U.S. site.

Novo Nordisk and Eli Lilly, makers of the weight loss drugs Wegovy and Zepound, respectively, have announced plans to invest in U.S. manufacturing. But it’s unclear if their intent to invest will warrant an exemption.