[LETTERHEAD OF LOWENSTEIN SANDLER]

                                   EXHIBIT 8.1


May 21, 1999

Bergen Brunswig Corporation
4000 Metropolitan Drive
Orange, California 92868-3598

Bergen Capital Trust I
c/o Bergen Brunswig Corporation
4000 Metropolitan Drive
Orange, California 92868-3598

Re:  7.80% Trust Originated Preferred Securities of Bergen Capital Trust I

Ladies and Gentlemen:

We have  acted as tax  counsel  to Bergen  Brunswig  Corporation,  a New  Jersey
corporation  (the  "Company"),  and  Bergen  Capital  Trust I (the  "Trust"),  a
statutory  business trust organized under the Business Trust Act of the State of
Delaware (12 Del. Code Ann.,  tit. 12, (S)(S) 3801, et seq.), in connection with
the sale  pursuant  to an  Underwriting  Agreement  dated May 20, 1999 among the
Company, the Trust, and the underwriters (the "Underwriters") named therein (the
"Underwriting   Agreement")  of  12,000,000  7.80%  Trust  Preferred  Securities
(liquidation  amount $25 per  preferred  security) of the Trust (the  "Preferred
Securities"),  representing  undivided beneficial interests in the assets of the
Trust.

The  Preferred  Securities  will be  guaranteed  by the Company  with respect to
distributions and payments upon liquidation,  redemption, and otherwise pursuant
to the Preferred Securities  Guarantee Agreement,  to be dated as of the Closing
Time (the "Guarantee  Agreement"),  between the Company and Chase Manhattan Bank
and Trust  Company,  National  Association,  as trustee,  for the benefit of the
holders of the Preferred Securities.

In connection with the issuance of the Preferred  Securities,  the Trust is also
issuing  371,134  7.80%  Common  Securities  (liquidation  amount $25 per common
security) (the "Common Securities"), representing undivided beneficial interests
in the assets of the Trust.

The proceeds from the sale of the Preferred Securities and the Common Securities
are to be used by the  Trust  to  purchase  an  aggregate  principal  amount  of
$309,278,350  of 7.80%  Subordinated  Deferrable  Interest  Notes  due 2039 (the
"Subordinated Notes"), to be issued by the Company. The Preferred Securities and
the Common  Securities  are to be issued  pursuant to the  Amended and  Restated
Declaration  of Trust,  to be dated as of the Closing Time (the  "Declaration"),
among the  Company,  as sponsor,  Chase  Manhattan  Bank  Delaware,  as Delaware
trustee  (the  "Delaware  Trustee"),  Chase  Manhattan  Bank and Trust  Company,



National Association,  as property trustee (the "Property Trustee"),  and Donald
R. Roden, Neil F. Dimick,  and Milan A. Sawdei as regular trustees (the "Regular
Trustees").  The  Subordinated  Notes are to be issued pursuant to an indenture,
dated  as of May 14,  1999  (the "Indenture"),  between  the  Company  and Chase
Manhattan Bank and Trust  Company,  National  Association,  as debt trustee (the
"Debt Trustee").

Capitalized  terms  used  but  not  otherwise  defined  herein  shall  have  the
respective meanings set forth in the Underwriting Agreement.

In connection with this opinion, we have examined originals or copies, certified
or otherwise  identified to our satisfaction,  of (i) the Prospectus  Supplement
dated  May 20,  1999  (including  a  Prospectus  dated May 14,  1999);  (ii) the
Certificate  of Trust filed with the Secretary of State of the State of Delaware
as of March 11, 1999, by the Regular  Trustees,  the Property  Trustee,  and the
Delaware Trustee;  (iii) the most recent draft of the Declaration  including the
designation of the terms of the Preferred Securities; (iv) the most recent draft
of the form of the Preferred  Securities and a specimen certificate thereof; (v)
the most recent draft of the Guarantee  Agreement;  (vi) an executed copy of the
Indenture;  (vii) the most recent draft of the form of Subordinated  Notes and a
specimen certificate thereof; (viii) the most recent draft of the form of Common
Securities and a specimen  certificate thereof; and (ix) an executed copy of the
Underwriting Agreement. We have also examined originals or copies,  certified or
otherwise identified to our satisfaction, of such records of the Company and the
Trust and such  agreements,  certificates of public  officials,  certificates of
officers,  trustees  or other  representatives  of the  Company,  the  Trust and
others, as applicable, and such other documents,  certificates and records as we
have deemed  necessary  or  appropriate  as a basis for the  opinions  set forth
herein.

In our  examination,  we have assumed the legal capacity of all natural persons,
the genuineness of all signatures,  the authenticity of all documents  submitted
to us as  originals,  the  conformity  to original  documents  of all  documents
submitted  to  us  as  certified,  conformed  or  photostatic  copies,  and  the
authenticity  of  the  originals  of  such  latter  documents.   In  making  our
examination of documents  executed,  or to be executed by parties other than the
Company or the Trust,  we have  assumed  that such parties had, or will have the
power,  corporate or other, to enter into and perform all obligations thereunder
and have also assumed the due authorization by all requisite  action,  corporate
or other,  and execution and delivery by such parties of such documents and that
such documents constitute, or will constitute,  valid and binding obligations of
such parties.  As to any facts material to the opinions  expressed  herein which
were not  independently  established  or  verified,  we have relied upon oral or
written  statements  and   representations  of  officers,   trustees  and  other
representatives of the Company,  the Trust and others. We have also assumed that
the final Guarantee Agreement,  Declaration,  form of the Preferred  Securities,



form of the  Subordinated  Notes and form of the Common  Securities will each be
substantially in the form of the draft of such document that we have examined.

In  rendering  our  opinion,  we have  participated  in the  preparation  of the
Prospectus  Supplement.  Our opinion is conditioned on, among other things,  the
initial  and  continuing  accuracy  of the facts,  information,  covenants,  and
representations  set forth in the documents referred to above and the statements
and representations made by the Company and the Trust.

In rendering  our opinion,  we have  considered  the  provisions of the Internal
Revenue Code of 1986, as amended, Treasury regulations (proposed,  temporary and
final) promulgated  thereunder,  judicial decisions and Internal Revenue Service
rulings all as of the date hereof, and all of which are subject to change, which
changes may be retroactively applied. A change in the authorities upon which our
opinion  is based  could  affect  our  conclusions.  There can be no  assurance,
moreover,  that any opinion  expressed  herein will be accepted by the  Internal
Revenue Service or, if challenged, by a court.

Based solely upon the foregoing, we are of the opinion that under current United
States federal income tax law:

     (1)  The  Trust  will  be  classified  as a  grantor  trust  and  not as an
          association  taxable as a corporation for United States Federal income
          tax purposes;

     (2)  The  Subordinated  Notes will be  classified  as  indebtedness  of the
          Company for United States Federal income tax purposes; and

     (3)  Although the discussion set forth in the Prospectus  Supplement  under
          the heading  "CERTAIN  UNITED STATES FEDERAL INCOME TAX  CONSEQUENCES"
          does not purport to discuss all possible  United States federal income
          tax  consequences of the purchase,  ownership,  and disposition of the
          Preferred Securities,  in our opinion such discussion constitutes,  in
          all  material  respects,  a fair and accurate  general  summary of the
          United States federal income tax  consequences to holders who purchase
          the Preferred Securities at their original issuance,  of the purchase,
          ownership, and disposition of the Preferred Securities.

Except as set forth  above,  we  express  no  opinion to any party as to the tax
consequences,  whether United States federal,  state,  local or foreign,  of the



issuance  of the  Subordinated  Notes,  the  Preferred  Securities,  the  Common
Securities,  or any transactions related to or contemplated by such issuance. We
are  furnishing  this opinion to you solely for your benefit in connection  with
the sale of the Preferred Securities pursuant to the Underwriting  Agreement and
this opinion is not to be used, circulated, quoted, or otherwise referred to for
any other purpose without our written  permission.  This opinion is expressed as
of the date hereof,  and we disclaim any undertaking to advise you of changes of
the facts stated or assumed herein or any subsequent changes in applicable law.

We consent to the filing of this  opinion as Exhibit  8.1 to the Form 8-K of the
Company dated May 21, 1999 as filed with the Securities and Exchange  Commission
on May 21, 1999, and to the reference to Lowenstein Sandler PC under the caption
"Legal  Opinions" in the prospectus and under the caption "Legal Matters" in the
prospectus  supplement.  In giving this consent, we do not thereby admit that we
are within the category of persons whose consent is required  under Section 7 of
the  Securities  Act of 1933,  as  amended  or the rules or  regulations  of the
Securities and Exchange Commission promulgated thereunder.

Very truly yours,

/s/ LOWENSTEIN SANDLER PC
    LOWENSTEIN SANDLER PC