Randomized, control, open label, multicentre clinical study. The patient who are in accordance with subject inclusion and exclusion criteria will be randomized to A group: Routine treatment B group: Routine treatment+ Cilostazol; C group : Routine treatment + Probucol; D group: Routine treatment+ Cilostazol+ Probucol .

Efficacy index:

After 12 weeks of treatment, the change difference of arteriosclerosis related biomarker between 4 modality groups.

Pharmacokinetics:

After 12 weeks of treatment, the study medication plasma concentration including of Probucol ,Cilostazol , Cilostazol metabolism OPC-13015 and OPC-13213 will be measured.

Safety evaluation:

Analysis the abnormality of Adverse Event, Vital Sign, Physical Examination, 12-lead ECG, and Laboratory Tests (including blood routine examination, routine urine analysis, blood biochemistry examination, glycosylated hemoglobin) in 4 modality groups.

Inclusion Criteria:

1. 40～80-year-old male or female

2. By brain CT or MRI result, cerebral infarction is clarified diagnosis within 1 year

3. With atherosclerosis, atherosclerosis should meet at least one of the conditions as below:

   • Clarified diagnosis of type 2 diabetes before
   • Clarified diagnosis of primary hypertension before
   • Clarified diagnosis of Atherosclerotic stenosis in any 2 or more than 2 regions as cerebral artery, carotid, extremity artery and coronary by conformation of ultrasonic or angiography result

4. Has Aspirin regularly for more than 1 month before registration

5. Informed Consent Form signature

Exclusion criteria：

1. Has an allergic history to study drugs( including of Probucol and Cilostazol) and Aspirin
2. Had lipid-lowing agents within the last 3 months ( except Statins)
3. Had antiplatelet or anticoagulation agents within the last 3 months (except Aspirin)
4. Had acute cerebral infarction within the last 1 month
5. Has cardiogenic cerebral embolism
6. At the registration ,Modified Rankin Scale ≥ 4
7. Hemorrhagic tendency or hemorrhagic disease (such as cerebral hemorrhage, gastrointestinal tract hemorrhage, etc.)
8. Had a myocardial infarction, angina pectoris within the last 3 months
9. Congestive heart failure
10. Is pregnant, is potentially pregnant, or is breastfeeding
11. Severe hepatic inadequacy or severe renal inadequacy (AST or ALT is 2.5 times higher than the upper limit of the normal value range, or serum creatinine is 1.2 times higher than the upper limit of the normal value range)
12. Persistent or hardly controlled hypertension (such as malignant hypertension, BP> 160/100 mmHg)
13. Severe ventricular arrhythmia (such as multiple and multifocal premature ventricular contractions)
14. Has a medical history that includes a cardiac syncope or a primary syncope
15. Has a condition that may prolong QT interval (such as congenital long QT syndrome, taking drugs which prolong QT interval, hypokalemia or hypomagnesemia, etc.)
16. Has severe diseases (such as, malignant tumor, severe anaemia, severe hematologic diabetes mellitus ketoacidosis, nonketotic hyperosmolar diabetic coma, etc.)
17. Registered other clinical trails within the last 3 months
18. Has vasculitis, moyamoya disease and other non-atherosclerosis vascular diseases
19. Other conditions that could exclude the subject from this study by doctor's judgment