MusclePharm Corporation is an American nutritional supplement company founded in 2006, Denver, CO and headquartered in Las Vegas, Nevada.

On February 18, 2010, the company acquired Muscle Pharm, LLC, and as a result, MusclePharm then became a wholly owned subsidiary.

[7] MusclePharm was charged by the U.S. Securities and Exchange Commission with infractions related to a multitude of accounting and disclosure violations.

The investigation had found that MusclePharm failed to report, or grossly misrepresented, approximately $500,000 in benefits paid to three current or former executives and chairmen.

[11] In 2013 MusclePharm Corporation completed a $12 million registered direct offering of its Series D Convertible Preferred Stock.

[19] 2011 Environmental Research Center (ERC) filed a notice of intent to start litigation against over 200 nutrition and supplement companies, including MusclePharm, alleging violations of California Proposition 65.