The goal of this clinical trial is to evaluate whether the combination of Probucol with statin therapy can reduce the risk of vascular events and improve atherosclerosis outcomes in adults with ischemic stroke and confirmed atherosclerosis. The main questions it aims to answer are: Does adding Probucol to statin therapy reduce plaque burden more effectively than statins alone? Does the combination therapy lead to fewer cardiovascular and cerebrovascular events compared to statins alone? Researchers will compare participants receiving standard statin therapy to those receiving statins combined with Probucol to assess differences in plaque burden and the occurrence of vascular events. Participants will: Choose either standard statin therapy (with possible addition of ezetimibe or PCSK9 inhibitors) or the same therapy combined with Probucol 0.5g twice daily. Attend regular follow-up visits for monitoring atherosclerosis features and cardiovascular health over a 3-year period. Undergo imaging studies to evaluate changes in atherosclerosis and blood tests to monitor lipid levels and other biomarkers.