A Study to Evaluate the Effects of Extended Release (ER) Niacin/Laropiprant, Laropiprant, ER Niacin, and Placebo on Urinary Prostanoid Metabolites in Subjects With High Cholesterol (0524A-075)(COMPLETED)

Inclusion Criteria: * Female subjects may not be pregnant and/or will agree to use appropriate method of contraception beginning at least 2 weeks prior to administration of the first dose of study drug in the first treatment period, throughout the study and until at least 2 weeks after administration of the last dose of study drug in the last treatment period. * Subject is judged to be in good health based on medical history, physical examination, vital sign measurements, and laboratory safety tests performed at the prestudy (screening) visit and/or prior to administration of the initial dose of study drug. * Subject has no clinically significant abnormality on electrocardiogram (ECG) performed at the prestudy (screening) visit and/or prior to administration of the initial dose of study drug. * Subject has been a nonsmoker and/or has not used nicotine or nicotine-containing products for at least approximately 6 months; subjects who have discontinued smoking or the use of nicotine/nicotine containing products for at least approximately 3 months may be enrolled in the study at the discretion of the investigator Exclusion Criteria: * Subject is mentally or legally incapacitated, has significant emotional problems at the time of prestudy (screening) visit or expected during the conduct of the study or has a history of a clinically significant psychiatric disorder over the last 5 to 10 years. - Subjects who have had situational depression may be enrolled in the study at the discretion of the investigator. * Subject has a history of stroke, chronic seizures, or major neurological disorder. * Subject has a history of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, or genitourinary abnormalities or diseases. * Subject has a history of neoplastic disease (including leukemia, lymphoma, malignant melanoma), or myeloproliferative disease, regardless of the time since treatment. * Subject has history of a thrombotic or platelet related disorder including prior deep venous thrombosis. Subject is being treated with coumadin, heparin, clopidogrel has used these agents within 2 weeks of screening. Subject is being treated with aspirin or has used this agent within 3 weeks prior to administration of screening. * Subject is unable to refrain from or anticipates the use of any medication, including prescription and non- prescription drugs or herbal remedies beginning approximately 2 weeks prior to administration of the initial dose of study drug, throughout the study until the poststudy visit. * Subject consumes excessive amounts of alcohol, defined as greater than 3 glasses, of alcoholic beverages or distilled spirits per day. * Subject consumes excessive amounts, defined as greater than 6 servings, of coffee, tea, cola, or other caffeinated beverages per day. * Subject has had major surgery, donated or lost 1 unit of blood (approximately 500 mL) or participated in another investigational study within 4 weeks prior to the prestudy (screening) visit. * Subject has a history of significant multiple and/or severe allergies, or has had an anaphylactic reaction or significant intolerability to prescription or non-prescription drugs or food. * Subject is currently a regular user of any illicit drugs or has a history of drug (including alcohol) abuse within approximately 6 months.