Mumbai, April 4 -- The Nifty Pharma index plunged 4.11% to 20,549.50, reversing its 2.25% gain in the previous session when the industry was initially exempted from tariff levies under Trump's "reciprocal tariffs" policy.

Laurus Labs (down 8.06%), IPCA Laboratories (down 6.7%), Granules India (down 6.15%), Lupin (down 5.69%), Gland Pharma (down 5.6%), Aurobindo Pharma (down 5.58%), Cipla (down 5.23%), Ajanta Pharma (down 5.23%), Biocon (down 4.77%), Natco Pharma (down 4.67%), Divi's Laboratories (down 4.5%), Zydus Lifesciences (down 4%), Dr. Reddy's Laboratories (down 3.95%), JB Chemicals & Pharmaceuticals (down 3.83%), Alkem Laboratories (down 3.54%), Sun Pharmaceutical Industries (down 3.39%), Glenmark Pharmaceuticals (down 3.06%), Abbot...