EXHIBIT 99.2 STOCKHOLDERS' AGREEMENT This STOCKHOLDERS' AGREEMENT (this "Agreement"), dated as of August 21, 1998 by and among Warburg, Pincus Investors, L.P., a Delaware limited partnership (the "Primary Stockholder"), Numark Laboratories, Inc., a...Stockholders' Agreement • October 23rd, 1998 • Menley & James Inc • Pharmaceutical preparations • New York
