WHITEHOUSE STATION, N.J.--(BUSINESS WIRE)--Jan. 10, 2006--Merck & Co., Inc. will conduct a vigorous defense in the product liability lawsuit, Garza v. Heart Clinic, Evans, Posada and Merck & Co., Inc., which is scheduled to go to trial before a jury on Jan. 24, 2006, in the 229th Judicial District Court of Starr County, Texas. The company believes the evidence in this case will show that VIOXX did not cause the unfortunate heart attack of Leonel Garza, Sr.