** Shares of Hikal Ltd HIKA.NS drop 2.4% to 249 rupees, down for a sixth consecutive session
** The pharmaceutical ingredients maker disclosed a warning letter on Friday from the U.S. FDA for "inadequate investigations of customer complaints on foreign matter"
** HIKA flags potential delay of revenue flow into second half of fiscal 2026
** Co adds that it has taken corrective actions and informed the U.S. FDA of the same
** Stock down 36% so far this year
(Reporting by Nandan Mandayam in Bengaluru)
((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))