Dong-A ST is a leading Korean pharmaceutical company specializing in ethical drugs. Stillen, Korea’s first herbal new drug, is a mucosal protective agent derived from Artemisia asiatica extract (DA-9601) that enhances gastric mucosal defense mechanisms for treating acute and chronic gastritis. Backed by multiple clinical studies confirming its efficacy and safety, Dong-A ST continues to advance innovative drug development in gastrointestinal disease