Exhibit 99.01

                              CARDINAL HEALTH, INC.

                         SARBANES-OXLEY BLACKOUT NOTICE

        TO DIRECTORS AND EXECUTIVE OFFICERS SUBJECT TO SECTION 306(a)(1)
         OF THE SARBANES-OXLEY ACT OF 2002 EFFECTIVE SEPTEMBER 27, 2004


         FUTURE CARDINAL HEALTH STOCK FUND INVESTMENTS. On and after September
27, 2004, and until further notice, no future investments may be made in the
Cardinal Health Stock Fund ("Stock Fund") under any of the individual account
employee benefit plans sponsored by Cardinal Health, Inc. (the "Company"). The
affected plans include the Cardinal Health Profit Sharing, Retirement and
Savings Plan, the Cardinal Health Profit Sharing, Retirement and Savings Plan
for PRN Employees, the Syncor International Corporation Employee Savings and
Stock Ownership Plan, the Cardinal Health Profit Sharing, Retirement and Savings
Plan for Puerto Rico Employees and the Cardinal Health Deferred Compensation
Plan (each, a "Plan" and collectively, the "Plans"). This suspension of future
investments into the Stock Fund in any of the Plans is effective with respect
both to the investment of new contributions and to transfers from other Plan
investment options. The period during which participants in the Plans will be
unable to exercise these rights otherwise available under the Plans is called a
"Blackout Period." PLEASE NOTE THAT YOU MAY OTHERWISE INVEST CONTRIBUTIONS AND
TRANSFERS IN ANY OTHER INVESTMENT OPTION AVAILABLE UNDER THE PLANS.

         REASON FOR THE BLACKOUT PERIOD. As announced in a press release on
September 27, 2004, the filing of the Company's Form 10-K for the fiscal year
ended June 30, 2004 will be delayed to provide additional time for its Audit
Committee to complete an investigation of certain matters related to its ongoing
internal review. Pending satisfactory review of these matters, Cardinal Health's
goal is to file its Form 10-K by late October. The suspension of new investments
in the Stock Fund in each of the Plans is expected to end when the Form 10-K
filing requirement has been satisfied.

         IMPACT OF THE BLACKOUT PERIOD. In addition to and as a result of the
unavailability of new investments in the Stock Fund, you will be temporarily
unable to diversify investments in your individual Plan account using the Stock
Fund. In addition, it is unlawful under Section 306(a)(1) of the Sarbanes-Oxley
Act of 2002 for any director or executive officer of the Company, directly or
indirectly, to purchase, sell or otherwise acquire or transfer any equity
security of the Company during any blackout period with respect to such equity
security, if such director or executive officer acquires or previously acquired
such equity security in connection with his or her service or employment as a
director or executive officer.

         DURATION OF THE BLACKOUT PERIOD. The Blackout Period begins on
September 27, 2004 and is expected to continue until such time as the Company
has filed its Form 10-K. Cardinal Health's goal is to file its Form 10-K by late
October. You will be notified when the Blackout Period ends. A copy of the
determination of the Company that this notice could not be provided in advance
due to circumstances that were beyond the reasonable control of the Company is





attached.

         CONTACT INFORMATION. If you have any questions concerning this notice,
you should contact the Company's Chief Legal Officer at (614) 757-5000. Cardinal
Health is located at 7000 Cardinal Place, Dublin, Ohio 43017.