New Delhi, June 17 -- Indian pharmaceutical stocks tumbled sharply on Tuesday, June 17, after US President Donald Trump warned that tariffs on pharmaceutical imports would be imposed "very soon." The Nifty Pharma index slumped over 2 percent to a day's low of 21,516.95, making it the worst-performing sector of the session. This latest development triggered widespread selling, with fears of revenue disruption for Indian drugmakers heavily reliant on the US market.

The primary trigger for the sell-off was President Trump's statement to reporters that his administration would soon roll out tariffs specifically targeting pharmaceutical imports. This comes just weeks after he first hinted at such a move in April. Market participants fear that...