AmeriSourceBergen Prices $500 Million Senior Notes Due 2008.

Business Editors

VALLEY FORGE, Pa. & ORANGE, Calif.--(BUSINESS WIRE)-- Aug. 9, 2001

AmeriSource Health Corporation (NYSE:AAS) and Bergen Brunswig Corporation (NYSE:BBC) today jointly announced that AmerisourceBergen Corporation has agreed to sell a new issue of $500 million Senior Notes due 2008.

The proceeds will be held in escrow for up to 90 days, until the completion of the pending combination of AmeriSource and Bergen Brunswig. The notes will have an annual interest rate of 8.125 percent, payable semi-annually.

The notes will be issued in a private placement and are expected to be resold by the initial purchasers to qualified institutional buyers under Rule 144A of the Securities Act of 1933.

The proceeds from the sale of the notes will be used together with proceeds expected from a new credit facility to repay AmeriSource's and Bergen's existing senior secured credit facilities, to pay fees and expenses associated with the merger, to repurchase or repay certain of Bergen's other indebtedness, and for general corporate purposes.

The notes to be offered have not been registered under the Securities Act of 1933 and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.

This press release shall not constitute an offer to sell or a solicitation of an offer to buy such notes in any jurisdiction in which such an offer or sale would be unlawful and is issued pursuant to Rule 135-c under the Securities Act of 1933.

The matters discussed in this press release may constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Exchange Act of 1934. Certain forward-looking statements can be identified by the use of forward-looking terminology such as `believes', expects', `may', `will', `could', `should', `seeks', `approximately', `intends', `plans', `estimates', or `anticipates', or the negative thereof or another comparable terminology, and statements addressing the timing, benefits and other aspects of the proposed merger. The following factors, among others could cause actual results to differ materially from those described in the forward-looking statements: inability to obtain or meet conditions imposed for government approvals for the transaction; failure of stockholders of AmeriSource and Bergen to approve the merger; the risk that the businesses of AmeriSource and Bergen will not be integrated successfully; failure to obtain and retain expected synergies; and other economic, business, competitive and/or regulatory factors affecting the business of AmeriSource and Bergen generally. The inclusion of forward-looking statements in this press release by AmeriSource and Bergen should not be regarded as representations by the companies that the plans of AmeriSource and Bergen or AmerisourceBergen will be achieved. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. AmeriSource and Bergen assume no obligation to update the information contained in this press release.

Additional Information

In connection with their proposed merger, AmeriSource and Bergen Brunswig filed a joint proxy statement/prospectus with the Securities and Exchange Commission. Investors and security holders are advised to read the joint proxy statement/prospectus because it contains important information.

Investors and security holders may obtain a free copy of the joint proxy statement/prospectus and other documents filed by AmeriSource and Bergen Brunswig at the Securities and Exchange Commission's web site at www.sec.gov.

The joint proxy statement/prospectus and such other documents may also be obtained for free from AmeriSource or from Bergen Brunswig by directing such request to AmeriSource Health Corporation, General Counsel, 1300 Morris Drive, Suite 100, Chesterbrook, Pennsylvania 19087-5594, Telephone: [phone]; or to Bergen Brunswig Corporation, Attention: Corporate Secretary, 4000 Metropolitan Drive, Orange, California 92868-3510, Telephone: [phone].

Participants in Solicitation

AmeriSource and Bergen Brunswig and their respective directors, executive officers and other members of their management and employees may be deemed to be participants in the solicitation of proxies from their respective stockholders in connection with the proposed merger.

Information concerning AmeriSource's participants in the solicitation is set forth in AmeriSource's Current Report on Form 8-K filed with the Securities and Exchange Commission on March 19, 2001, and information concerning Bergen Brunswig's participants in the solicitation is set forth in Bergen Brunswig's Current Report on Form 8-K filed with the Securities and Exchange Commission on March 19, 2001.