Strides bought a unit of Vivimed Labs Ltd in January. Vivimed manufactures losartan, a drug that is part of a wider recall in the United States. The FDA 's warning letter dated July 1 comes months after several Indian drugmakers including Sun Pharma ceutical Ltd and Dr. Reddy's Laboratories Ltd were named in a US lawsuit against Israeli drugmaker Teva Pharma ceutical Industries Ltd accusing it of conspiring to inflate drug prices and stifle competition for generic dr ugs. (Reuters)