Company Press Releases

univadis™: NEW ONLINE RESOURCE FOR CANADIAN DOCTORS

Unique one-stop-site for the latest medical information

MONTREAL (Quebec) - June 6, 2007 - univadis™, an innovative medical website for Canadian doctors, was launched today. A new, free and bilingual resource, univadis™ provides Canadian doctors with the latest medical and general interest information and can be tailored to each doctor's specialty. univadis™ is offered as a service to the medical profession by Merck Frosst Canada Ltd.

Currently used by over 400,000 physicians in 30 countries, univadis™ has daily medical, local and world news, an online medical image atlas, advanced medical and literature search tools and in-depth information on 24 therapeutic areas. Canadian doctors can find non-promotional, unbiased and accurate information quickly and easily from credible sources such as Braunwald PLUS, Canadian Press, Current Medicine Group, Elsevier, Excerpta Medica, the Merck Manuals and PubMed.

"univadis™ has been designed to help Canadian doctors find what they are looking for in just two clicks," said Dr. Ernest Prégent, Director, Medical Services at Merck Frosst. "Canadian doctors can quickly and easily keep up-to-date with medical literature and current events without having to browse extensively or access multiple sources, both online and offline. This is a one-stop medical resource that will keep doctors informed and save them countless hours on research and literature reviews."

When doctors sign up for univadis™, they can select their specialty from 24 therapeutic areas, ranging from allergy or respiratory to women's health. On each subsequent visit, doctors are presented with content related to their speciality. As they use the site, they can further personalize the content they see on their home page by adding or removing content feeds or adding additional areas of interest.

Among the dozens of unique univadis™ features, doctors will find:

• First View - A literature review service from Elsevier reviewing over 100 leading journals and presenting the 'need to know' scientific information;
• Congress Reporter - An International congress reporting service from Excerpta Medica;
• BraunwaldPLUS - An image slide atlas containing over 4,000 medical annotated slides from respected authors.

univadis™ is available free of charge to all physicians with a Canadian professional license number. To join the fastest growing online medical community, register with www.univadis.ca.

About Merck Frosst:

At Merck Frosst, patients come first. Merck Frosst Canada Ltd. is a research-driven pharmaceutical company discovering, developing and marketing a broad range of innovative medicines and vaccines to improve human health. Merck Frosst is one of the top 20 R&D investors in Canada, with an investment of $114 million in 2006. More information about Merck Frosst is available at http://www.merckfrosst.com.

Forward-Looking Statement

This press release contains "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995. These statements are based on management's current expectations and involve risks and uncertainties, which may cause results to differ materially from those set forth in the statements. The forward-looking statements may include statements regarding product development, product potential or financial performance. No forward-looking statement can be guaranteed, and actual results may differ materially from those projected. Merck undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise.  Forward-looking statements in this press release should be evaluated together with the many uncertainties that affect Merck's business, particularly those mentioned in the cautionary statements in Item 1 of Merck's Form 10-K for the year ended Dec. 31, 2006, and in its periodic reports on Form 10-Q and Form 8-K, which the Company incorporates by reference.

univadis™ is a Registered trademark of Merck & Co., Inc., used under license by Merck Frosst Canada Ltd. All rights reserved.

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