Exhibit 16.1
[Grant Thornton]
March 27, 2012
U.S. Securities and Exchange Commission
Office of the Chief Accountant
100 F Street, NE
Washington, DC 20549
Re: Cornerstone Therapeutics Inc.
File No.000-50767
Dear Sir or Madam:
We have read Item 4.01 of Form 8-K of Cornerstone Therapeutics Inc. dated March 27, 2012, and agree with the statements concerning our Firm contained therein.
Very truly yours,
/s/ GRANT THORNTON LLP