EXHIBIT 5.1

                                  July 3, 2002




Simulations Plus, Inc.
1220 W. Avenue J
Lancaster, California 93534


                     RE: REGISTRATION STATEMENT ON FORM S-8
                             SIMULATIONS PLUS, INC.
                             ----------------------
Gentlemen:

         We are acting as counsel for Simulations Plus, Inc., a California
corporation (the "Company"), in connection with the registration under the
Securities Act of 1933, as amended (the "Act"), of the offering and sale of up
to 1,250,000 shares (the "Shares") of the Company's common stock, par value
$0.001 per share (the "Common Stock), which is held by or may be issued to
certain of our officers, directors, employees and consultants, or the selling
stockholders, as compensation for employment or consulting services under our
1996 Stock Option Plan, as amended to date (the "Plan"). A Registration
Statement on Form S-8 covering the Shares (the "Registration Statement") is
being filed under the Act with the Securities and Exchange Commission.

         In rendering the opinions expressed herein, we have reviewed such
matters of law as we have deemed necessary and have examined copies of such
agreements, instruments, documents and records as we have deemed relevant.

         In rendering the opinions expressed herein, we have assumed the
genuineness and authenticity of all documents examined by us and of all
signatures thereon, the legal capacity of all natural persons executing such
documents, the conformity to original documents of all documents submitted to us
as certified or conformed copies or photocopies and the completeness and
accuracy of the certificates of public officials examined by us. We have made no
independent factual investigation with regard to any such matters.

         Based upon the foregoing and subject to the qualifications stated
herein, it is our opinion that the Shares, issued or to be issued upon the
exercise of any options duly granted pursuant to the Plan, when issued, paid for
and delivered upon the exercise of such options, in accordance with the terms of
the Plan, will be validly issued, fully paid and non-assessable



Simulations Plus, Inc.
July 3, 2002
Page 2


         The opinions expressed herein are limited to matters involving the
federal laws of the United States and to the laws of the State of California,
and we express no opinion as to the effect on the matters covered by this
opinion of the laws of any other jurisdiction.

         We hereby consent to the use of this opinion as an exhibit to the
Registration Statement and the reference to our firm therein under the caption
"Legal Matters."

         The opinions expressed herein are rendered solely for your benefit in
connection with the transaction described herein. Except as otherwise provided
herein, this opinion may not be used or relied upon by any person, nor may this
letter or any copies thereof be furnished to a third party, filed with a
governmental agency, quoted, cited or otherwise referred to without our prior
written consent.

                                          Respectfully submitted,



                                          Luce, Forward, Hamilton & Scripps, LLP