Comparator placebo

Extended-release Pregabalin for the Treatment of Neuropathic Pain in Patients With Diabetic Peripheral Neuropathy and Postherpetic Neuralgia

MK6186 in HIV-1 Infected Patients (MK-6186-007 AM2)

An Approved Drug to Study a New Indication for Seasonal Allergic Rhinitis in Patients With Asthma (0476-269)

An Investigational Drug Study to Treat Respiratory Symptoms Associated With Respiratory Syncytial Virus (RSV) Bronchiolitis (0476-272)

ALLOGRAFT, A Study to Evaluate the Renal Protective Effects of Losartan (0954-222)(COMPLETED)

Sitosterolemia Extension Study (0653-003)(COMPLETED)

Sitosterolemia Extension Study (0653-004)(COMPLETED)

An Investigational Drug Study to Lower Non-Cholesterol Sterol Levels Associated With Sitosterolemia (0653-062)(COMPLETED)

Study of MK0476 (Montelukast Sodium) and Effects on Asthma and Nasal Symptoms Upon Exposure to Cats (0476-256)

A Study to Determine the Effect of Montelukast Sodium as an Episode Modifier in the Treatment of Infrequent Episodic Asthma in Children (0476-165)

A Study to Evaluate the Effects of Ezetimibe (MK-0653) on the Postprandial (Following a Meal) Lipoprotein Response in Participants With Primary Hypercholesterolemia (High Cholesterol) (MK-0653-072)(COMPLETED)

A Study of Rizatriptan for the Treatment of Acute Migraine in Patients on Topiramate for Migraine Prophylaxis

Effect of Simvastatin on Endothelial Function in Premenopausal Women With Systemic Lupus Erythematosus (0733-271)(TERMINATED)

An Investigational Drug on Clinical Outcomes in Patients With Aortic Stenosis (Narrowing of the Major Blood Vessel of the Heart)(MK-0653A-043 AM4)(COMPLETED)

To Evaluate Ezetimibe Plus Atorvastatin Versus Atorvastatin in Patients With High Cholesterol Not Controlled on Atorvastatin 20 mg (0653-079)(COMPLETED)

A Study to Evaluate the Efficacy and Tolerability of Rizatriptan for Treatment of Acute Migraine (0462-087)

Montelukast Asthmatic Smoker Study (0476-332)(COMPLETED)

The Safety and Effectiveness of MK0476 (Montelukast) in Patients With Chronic Asthma (0476-388)

Study to Test Rizatriptan in the Early Treatment of Acute Migraine (0462-081)

The Effect of Losartan and Losartan Plus Isosorbide Mononitrate on Central Blood Pressure Measurements (0954-317)