EXHIBIT 22.1 Watson Pharmaceuticals, Inc. Subsidiaries of the Company Name Country or State of Incorporation Watson Laboratories, Inc. Nevada Watson Pharmaceuticals (Asia), Ltd. British Virgin Islands Corona Pharmaceuticals, Inc. Nevada Circa Pharmaceuticals, Inc. New York Oclassen Pharmaceuticals, Inc. Delaware Royce Laboratories, Inc. Florida B Q Pharmaceutical Realty, Inc. Delaware The Rugby Group, Inc. New York