UPDATE 3-P&G to buy German Merck's consumer health unit for $4.2 bln By: Reuters: Company News April 19, 2018 at 17:34 PM EDT * Merck to update earnings guidance at Q1 results (Adds Breakingviews link) Read More >> Related Stocks: Amazon.com Gsk Plc ADR Johnson & Johnson Merck & Co Novan Inc Perrigo Pfizer Procter & Gamble Teva Pharmaceutical Industries ADR