CONTACT:
Acura Pharmaceuticals, Inc.
Peter A. Clemens, SVP Investor Relations & CFO
(847-705-7709)
FOR IMMEDIATE RELEASE

ACURA PHARMACEUTICALS, INC. ADDED TO THE RUSSELL 3000® INDEX AND THE RUSSELL MICROCAP® INDEX
Palatine,
IL, June
30, 2008:
Acura Pharmaceuticals, Inc. (NasdaqCM: ACUR) today announced that
Russell Investments has selected the Company for inclusion in the
Russell 3000® Index and the Russell Microcap® Index effective June 30,
2008. The Russell 3000® Index measures the performance of the
3,000 largest U.S. compnaies. The Russell Microcap® Index measures the
performance of the microcap segment of the U.S. equity market that trade
on national exchanges, while excluding OTC bulletin board securities and
pink-sheet stocks due to their failure to meet national exchange listing
requirements.
About Acura
Pharmaceuticals, Inc.
Acura Pharmaceuticals,
Inc. is a specialty pharmaceutical company engaged in research,
development and manufacture of innovative Aversion® (abuse deterrent)
Technology and related product candidates.
Forward-looking
Statements
Certain statements in
this press release constitute "forward-looking statements" within the
meaning of the Private Securities Litigation Reform Act of 1995. Such
forward-looking statements involve known and unknown risks,
uncertainties and other factors which may cause our actual results,
performance or achievements to be materially different from any future
results, performance, or achievements expressed or implied by such
forward-looking statements. The most significant of such factors
include, but are not limited to, our ability, the ability of King
Pharmaceuticals (to whom we have licensed our Aversion Technology for
certain opioid analgesic products in the United States, Canada and
Mexico) and the ability of other pharmaceutical companies, if any, to
whom we may license our Aversion® Technology, to obtain necessary
regulatory approvals and commercialize products utilizing the Aversion®
Technology, the ability to avoid infringement of patents, trademarks and
other proprietary rights of third parties, and the ability to fulfill
the U.S. Food and Drug Administration’s (“FDA”) requirements for
approving our product candidates for commercial manufacturing and
distribution in the United States, including, without limitation, the
adequacy of the results of the laboratory and clinical studies completed
to date and the results of other laboratory and clinical studies, to
support FDA approval of our product candidates, the adequacy of the
development program for our product candidates, changes in regulatory
requirements, adverse safety findings relating to our product
candidates, the risk that the FDA may not agree with our analysis of our
clinical studies and may evaluate the results of these studies by
different methods or conclude that the results of the studies are not
statistically significant, clinically meaningful or that there were
human errors in the conduct of the studies or otherwise, the risk that
further studies of our product candidates are not positive or otherwise
do not support FDA approval or commercially viable product labeling, and
the uncertainties inherent in scientific research, drug development,
clinical trials and the regulatory approval process. Other important
factors that may also affect future results include, but are not limited
to: our ability to attract and retain highly skilled personnel; our
ability to secure and protect our patents, trademarks and proprietary
rights; litigation or regulatory action that could require us to pay
significant damages or change the way we conduct our business; our
ability to compete successfully against current and future competitors;
our dependence on third-party suppliers of raw materials; our ability to
secure U.S. Drug Enforcement Administration ("DEA") quotas and source
the active ingredients of our products in development; difficulties or
delays in clinical trials for our product candidate or in the commercial
manufacture and supply of our products; and other risks and
uncertainties detailed in this Report. When used in this press release,
the words "estimate," "project," "anticipate," "expect," "intend,"
"believe," and similar expressions are intended to identify
forward-looking statements. You are encouraged to review other
important risk factors relating to our operations on our web site at
www.acurapharm.com under the link, “Company Risk Factors” and detailed
in our filings with the Securities and Exchange Commission. We assume
no obligation to update any forward-looking statements as a result of
new information or future events or developments. Our press releases may
be reviewed at
www.acurapharm.com.
Russell 3000® and
Russell Microcap® are registered trademarks of Russell Investments.

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