The study was cancelled due to budget limitations

To measure the percentage of patients who achieve all the treatment lipid goals being treated with ezetimibe/simvastatin 10/20 with or without MK0524A (1-2 g/day).

Patients will receive placebo for 4 weeks, then Vytorin 10/20 mg for 6 weeks, if efficacy of treatment is achieved, they will continue with Vytorin 10/20 mg + placebo for 12 more weeks, if not achieved, will receive Vytorin 10/20 mg + MK0524A 1 gr for 6 weeks, if efficacy achieved will continue with Vytorin 10/20 mg + MK0524A 1 gr + placebo; if not achieved, will receive Vytorin 10/20 mg + MK0524A 2 gr for 6 weeks.

Inclusion Criteria:

• Patient Without Ischemic Cardiovascular Disease Who During The Treatment With Statin Have LDL-C <130 Mg/Dl at Visit 1 Or Within The 6 Month Period Before Visit 1

Exclusion criteria:

• The use of any other lipid lowering agent
• Life expectancy lower than a year.
• Any condition that may interfere with the adherence to the study protocol