BioSante Pharmaceuticals Reports

Second Quarter 2011 Financial Results

LINCOLNSHIRE, Illinois (July 25, 2011) --- BioSante Pharmaceuticals, Inc. (NASDAQ: BPAX) today announced its financial results for the second quarter of 2011.

The Company's cash and cash equivalents as of June 30, 2011 were approximately $37.1 million. BioSante incurred a net loss of approximately $15.0 million or ($0.16) per share for the quarter ended June 30, 2011, compared to a net loss of $10.8 million or ($0.17) per share for the same period in 2010. This expected increase in net loss was due primarily to the conduct of the three ongoing LibiGel® (testosterone gel) Phase III clinical studies to support submission of a new drug application (NDA) for U.S. Food and Drug Administration (FDA) approval.

As a result of this focus on LibiGel development and the Company's planned conduct of the LibiGel program, research and development expenses increased to approximately $11.1 million and $26.0 million for the three and six month periods ended June 30, 2011 from $8.7 million and $18.1 million for the three and six month periods ended June 30, 2010.

About BioSante Pharmaceuticals, Inc.

BioSante is a specialty pharmaceutical company focused on developing products for female sexual health and oncology. BioSante's lead products include LibiGel® (transdermal testosterone gel) for the treatment of female sexual dysfunction (FSD), specifically hypoactive sexual desire disorder (HSDD), which is in Phase III clinical development under a U.S. Food and Drug Administration (FDA) Special Protocol Assessment (SPA). BioSante's first FDA-approved product is Elestrin™ (estradiol gel) indicated for the treatment of hot flashes associated with menopause, marketed in the U.S. by Azur Pharma, BioSante's licensee. BioSante also is developing a portfolio of cancer vaccines, four of which have been granted Orphan Drug designation, and are currently in several Phase II clinical trials. Other BioSante products are Bio-T-Gel™, a testosterone gel for male hypogonadism, for which an NDA is pending, licensed to Teva Pharmaceuticals, and an oral contraceptive in Phase II clinical development using BioSante patented technology. Additional information is available online at:

http://www.biosantepharma.com

For Media:

McKinney Chicago

Alan Zachary

phone: (312) 506-5220

For Investors:

The Trout Group LLC

Tricia Swanson

E-Mail: tswanson@troutgroup.com

Phone: (646) 378-2953

Forward-Looking Statements To the extent any statements made in this news release deal with information that is not historical, these are forward-looking statements under the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about BioSante's plans, objectives, expectations and intentions with respect to future operations and products, the timing of anticipated regulatory submissions and other statements identified by words such as "will," "continue," "could," "believe," "intends," "continue," "expects," "anticipates," "estimates," "may," other words of similar meaning, derivations of such words or the use of future dates. Forward-looking statements by their nature address matters that are, to different degrees, uncertain. Uncertainties and risks may cause BioSante's actual results to be materially different than those expressed in or implied by BioSante's forward-looking statements. For BioSante, particular uncertainties and risks include, among others, the difficulty of developing pharmaceutical products, obtaining regulatory and other approvals and achieving market acceptance; the marketing success of BioSante's licensees or sublicensees; the success of clinical testing; and BioSante's need for and ability to obtain additional financing. More detailed information on these and additional factors that could affect BioSante's actual results are described in BioSante's filings with the Securities and Exchange Commission, including its most recent annual report on Form 10-K and subsequent quarterly report on Form 10-Q. All forward-looking statements in this news release speak only as of the date of this news release. BioSante undertakes no obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.