ATLANTA, GA–( EMWNews – April 8, 2008) – A shareholder class action lawsuit has been

filed in the United States District Court for the Eastern District of

Pennsylvania against Merck & Co., Inc. (“Merck” or the “Company”) (NYSE: MRK) and Richard T. Clark on behalf of purchasers of the Company’s common

stock who purchased stock between October 22, 2007 and March 28, 2008 (the

“Relevant Period”).

The lawsuit alleges the Company violated the Securities Exchange Act of

1934 when it withheld information concerning the results of clinical trails

of VYTORIN, which were not positive for the Company.

Shareholders who purchased shares of Merck common stock during the Relevant

Period with questions concerning their legal rights are invited to contact

Holzer Holzer & Fistel, LLC and its attorneys Michael I. Fistel Jr., Esq.

or Marshall P. Dees, Esq. via email at [email protected] or

[email protected], or via toll-free telephone at (888) 508-6832.

Holzer Holzer & Fistel, LLC is an Atlanta, Georgia law firm that dedicates

its practice to vigorous representation of shareholders and investors in

litigation nationwide, including shareholder class action and derivative

litigation. More information about the firm is available through its

website, www.holzerlaw.com and upon request from the firm. Holzer Holzer &

Fistel, LLC has paid for the dissemination of this promotional

communication, and Michael I. Fistel, Jr. is the attorney responsible for

its content.