US president has said that he will use tariffs to bring down costly pharmaceutical drugs, but the impact remains uncertain.By The Associated PressPublished On 2 Apr 20262 Apr 2026United States President Donald Trump has signed an executive order that could slap long-threatened tariffs of up to 100 percent on some patented drugs if pharmaceutical companies don’t reach deals with his administration in the coming months.Under Thursday’s executive order, companies that have signed a “most favoured nation” pricing deal and are actively building facilities in the US will have a zero-percent tariff.Recommended Stories list of 3 itemsend of listFor those that don’t have a pricing deal but are building such projects in the US, a 20 percent tariff will apply, but it will increase to 100 percent in four years.A senior administration official told reporters on a press call that companies still have months to negotiate before the 100 percent tariffs kick in. Bigger companies will have 120 days, and 180 days are offered for everyone else.The official, speaking on condition of anonymity to preview the executive order before it was issued, did not identify any companies or drugs that were in jeopardy of getting hit with the increased tariffs.But the source noted the administration had already reached 17 pricing deals with major drugmakers, 13 of which have signed.In Thursday’s executive order, Trump wrote that he deemed the tariffs necessary “to address the threatened impairment of the national security posed by imports of pharmaceuticals and pharmaceutical ingredients”.The order arrived on the first anniversary of Trump’s so-called Liberation Day, when the president unveiled sweeping new import taxes on nearly every country in the world, sending the stock market reeling. Those “Liberation Day” tariffs were among the duties the Su …