Dr. Reddy's Laboratories Ltd., India’s second-largest drug company, plunged unexpectedly into the red in the third financial quarter, hit by a $156.5m write-off for its generic NuvaRing (etonorgestrel/ethinyl estradiol) contraceptive. But a strong underlying performance, reflecting a string of US launches and a tight rein on costs, propelled the company’s shares to a 52-week high.
The company, which has been grappling with US regulatory compliance issues and falling product prices in the US, crashed to...







