Teva drops 8% on guidance, manufacturing problems By: MarketWatch February 08, 2018 at 10:51 AM EST A Food and Drug Administration warning letter received by one of Teva’s partners is expected to delay approval of as many as three new drugs. Read More >> Related Stocks: Alder Biopharma Amgen Eli Lilly Novartis Ag ADR Teva Pharmaceutical Industries ADR