Already wounded by the withdrawal of its Vioxx pain reliever from the market, Merck & Co. must now contend with hundreds of lawsuits over the drug's side effects...sealed court documents suggest Merck understood Vioxx's dangers at an early stage...Frazier [Merck general counsel Kenneth C. Frazier] said the documents were taken out of context, and don't reflect the evolution of thought on Vioxx as more data became available. [also refers to Bayer AG, Wyeth]