Efficacy and Safety of Extended-Release Niacin/ Laropiprant/Simvastatin Tablets in Participants With Hypercholesterolemia or Mixed Dyslipidemia (MK-0524B-143)
Efficacy and Safety of Extended-Release Niacin/ Laropiprant/Simvastatin Tablets in Participants With Hypercholesterolemia or Mixed Dyslipidemia (MK-0524B-143)
This study is being done to find out if tablets containing extended release (ER) niacin,
 laropiprant, and simvastatin (ERN/LRPT/SIM) are as effective as tablets containing ER niacin
 and laropiprant taken with simvastatin tablets (ERN/LRPT + SIM) for lowering high cholesterol
 and high lipid levels in the blood. The primary hypothesis is that ERN/LRPT/SIM 2 g /20 mg is
 equivalent to ERN/LRPT 2 g coadministered with simvastatin 20 mg in reducing low-density
 lipoprotein cholestrol (LDL-C).
Inclusion criteria:

 -  Has a history of primary hypercholesterolemia or mixed dyslipidemia and meets LDL-C
 and triglyceride criteria.

 -  Is high risk coronary heart disease (CHD) and has LDL-C ≤190 mg/dL (≤4.91 mmol/L).

 -  Is not high risk CHD and has LDL-C ≤240 mg/dL (≤6.21 mmol/L).

 Exclusion criteria:

 -  Is pregnant or breast-feeding, or expecting to conceive or donate eggs or sperm during
 the study.

 -  Has a history of malignancy within ≤5 years, except for adequately treated basal cell
 or squamous cell skin cancer or in situ cervical cancer.

 -  Consumes more than 3 alcoholic drinks per day (14 per week).

 -  Is a high risk CHD patient on lipid modifying therapy (LMT).

 -  Is on any LMT with equivalent or greater LDL-C-lowering efficacy than simvastatin 40
 mg.

 -  Has Type 1 or Type 2 diabetes mellitus that is poorly controlled, or on statin
 therapy.

 -  Currently engages in vigorous exercise or is on an aggressive diet regimen.

 -  Has uncontrolled endocrine or metabolic disease, uncontrolled gout, kidney or hepatic
 disease, heart failure, recent peptic ulcer disease, hypersensitivity or allergic
 reaction to niacin or simvastatin, recent heart attack, stroke or heart surgery.

 -  Is human immunodeficiency virus (HIV) positive.

 -  Has taken niacin >50 mg/day, bile-acid sequestrants,
 3-hydroxy-3-methylglutaryl-coenzyme A(HMG-CoA) reductase inhibitors, ezetimibe,
 Cholestin™ [red yeast rice] and other red yeast products within 6 weeks, or fibrates
 within 8 weeks of randomization visit (Visit 3).

 Note: Fish oils, phytosterol margarines and other non-prescribed therapies are allowed
 provided participant has been on a stable dose for 6 weeks prior to Visit 2 and agrees to
 remain on this dose for the duration of the study.

 -  Is currently receiving cyclical hormonal contraceptives or intermittent use of hormone
 replacement therapies (HRTs) (e.g., estradiol, medroxyprogesterone, progesterone).
 Note: Participants who have been on a stable dose of non-cyclical HRT or hormonal
 contraceptive for greater than 6 weeks prior to Visit 1 are eligible if they agree to
 remain on the same regimen for the duration of the study.

 -  Is taking prohibited medications such as systemic corticosteroids, potent inhibitors
 of Cytochrome P450 3A4 (CYP3A4), cyclosporine, danazol, or fusidic acid.

 -  Consumes >1 quart of grapefruit juice/day.

 -  Requires warfarin treatment and has not been on a stable dose with a stable
 International Normalized Ratio (INR) for at least 6 weeks prior to Visit 1.