Objective: Nowadays the combined use of herbal extracts and western medicines has been prevalent, but concern about its risk is also increasing. Even though the importance of clinical trials is well recognized, there have been only a few studies on the combined use of herbal extracts and western medicines. This study was aimed to examine which herbal extracts and antiplatelets or anticoagulants are most commonly prescribed together to inpatient ischemicstroke patients and investigate the combined prescription rate. Methods: We investigated the most frequently prescribed herbal extracts from two different sources. First, we chose herbal medicine extracts from 2008 Traditional Korean Medicine Utilization Status. Then, among patients who were admitted to Kyung-Hee Oriental Medical Center diagnosed with ischemic stroke, we found patients who were administered with these herbal medicine extracts and among these patients, we investigated how many were concomitantly administered with antiplatelets or anticoagulants. Second, we chose other herbal medicine extracts that were most often prescribed within Kyung-Hee Oriental Medical Center and found patients who were administered with these herbal medicine extracts, then investigated how many of them were concomitantly administered with specific antiplatelets or anticoagulants. Results: The most commonly prescribed herbal medicine extracts among ischemic stroke patients were Ojeok-san, Bojungikgi-tang, Sochungryong-tang and Samsoeum. About 46 to 69 percent were concomitantly administered with either specific antiplatelets or anticoagulants. Conclusions: The most often prescribed herbal medicine extracts in inpatient ischemic stroke patients are Ojeok-san, Bojungikgi-tang, Sochungryong-tang, and Samsoeum. Among patients who were prescribed with Ojeok-san, Bojungikgi-tang, Sochungryong-tang, Samsoeum, patients who were concomitantly administered with either antiplatelets or anticoagulants were about 46% to 69%.