Nifty Pharma crashed by around 1.6% on Wednesday after US President Donald Trump announced plans to impose tariffs on drug imports at "never before seen" levels. IPCA Laboratories, Biocon, Glenmark, Laurus Labs and Aurobindo Pharma were the top losers on the index as of 11:43 am. Over the past six months, the index has dipped by over 15%.