Sun Pharma share price drops 5% after Donald Trump slaps 100% tariff on branded pharma

Sun Pharma led the Nifty Pharma declines after punitive action by US President Donald Trump to impose 100% tariff on branded pharma products.

The stock of Sun Pharmaceautical Industries Ltd. fell on Friday after US President Donald Trump imposed 100% tariff on branded pharma.

The logo of Sun Pharma installed on the facade of its corporate office in Mumbai. (Reuters)

The share price of India's largest drugmaker fell as much as 4.96% to ₹1,547.25 at the opening bell, even as Nfity Pharma declined 2.3% with all its constituents in the red.

US President Donald Trump has announced a fresh round of tariffs, including a 100% duty on branded or patented pharmaceuticals starting 1 October, unless a company is building a manufacturing plant in America.

No levies will be applied to pharmaceutical imports if companies have broken ground on a US manufacturing plant, or if such a plant is under construction, Trump posted on social media Thursday.

“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 wrote. “There will, therefore, be no Tariff on these Pharmaceutical Products if construction has started.”

The posts offered no further details. The pharmaceuticals plan, as described by the president, could allow for wide exemptions for companies with presences in the US. The White House did not immediately respond to a request for more specifics.