EXHIBIT 32.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with this annual report on Form 10-K of King Pharmaceuticals, Inc. I, James R. Lattanzi, Chief Financial Officer of King Pharmaceuticals, Inc., certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: 1. The report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 2. The information contained in this report fairly presents, in all material respects, the financial condition and results of operations of King Pharmaceuticals, Inc. Date: March 16, 2005 /s/ James R. Lattanzi -------------------------- James R. Lattanzi Chief Financial Officer