AMENDMENT NO. 1 TO EXECUTIVE EMPLOYMENT AGREEMENT

EXHIBIT 10.9(b)

AMENDMENT NO. 1 TO EXECUTIVE EMPLOYMENT AGREEMENT

          THIS AMENDMENT NO. 1 TO EXECUTIVE EMPLOYMENT AGREEMENT (this “Amendment”) by and between Mylan Laboratories Inc., a Pennsylvania corporation (the “Company”) and Stuart A. Williams (the “Executive”), is made as of April 3, 2006.

          WHEREAS, the Company and the Executive are parties to that certain Executive Employment Agreement dated as of July 1, 2004 (the “Agreement”);

          WHEREAS, the Company and the Executive wish to amend and extend the Agreement, effective as of April 1, 2006, as set forth below;

          NOW, THEREFORE, for good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereto, intending to be legally bound, agree as follows:

“Effective Date; Termination of Employment. This Agreement shall commence and be effective as of the date hereof and shall remain in effect, unl