A Study to Investigate the Influence of MK0859 on Blood Pressure (MK-0859-012)(COMPLETED)

Inclusion Criteria: * You are between the ages of 45-75 * You are a man or non-pregnant woman * You agree to not eat or drink fruit or fruit juices (orange, apple or grapefruit) for 2 weeks before starting study medication Exclusion Criteria: * You have smoked or used other nicotine-containing products (chewing tobacco) within the last 6 months * You have used St. John's Wort or any products that include it within the last 2 weeks * You have used herbal, organic, dietary or nutritional remedies within the last 2 weeks * You have a history of drug allergies (anaphylaxis, angioedema) * You have taken an investigational drug in another clinical trial within the last 4 weeks * You have a history of cardiovascular disease including hypertension (high blood pressure) * You have a history of renal disease * You have a history of gall bladder disease or have had abnormal liver function tests * You have a history of drug or alcohol abuse * You drink more than 6 cups of caffeinated beverages a day (coffee, tea or cola)