Samjin Pharmaceuticals Co., Ltd. (005500.KS) manufactures, markets, and distributes a broad portfolio of prescription, over-the-counter (OTC), and health supplement products targeting therapeutic areas including antipyretic and analgesic medications; circulatory and anti-inflammatory treatments such as Platless (antiarteriosclerotic agent) and Geworin (NSAIDs); gastrointestinal remedies; herbal tonics and hepatic pharmaceuticals; respiratory and antibiotic drugs; anti-cancer therapies; nootropics like Neuracetam and Nutilin (brain function improver); appetite stimulants such as Trestan; anti-thrombotic agents like Flaris; and additional offerings encompassing active pharmaceutical ingredients (APIs) including clopidogrel bisulfate and rosuvastatin calcium, alongside pipeline candidates such as SJP1902 (anticancer immunotherapy), SJP1801 (dementia and Parkinson's), SJP003 (diabetes), SJP006 (antiviral), SA001 (dry eye and Sjogren syndrome), SJP1804 (macular degeneration), SJP1604 and SJP1602 (cancer), the antiviral Tafrid, and diabetes treatment Pobigle. Founded in 1968 and headquartered in Seoul, South Korea, with manufacturing facilities in Busan, the company primarily serves the domestic Korean market while pursuing global expansion through R&D investments exceeding KRW 300 billion annually since 2022 and compliance with international standards. Recent developments include a joint research agreement with ApitBio in December 2024 to co-develop novel antibody-drug conjugates (ADCs) leveraging proprietary linker-payload technology and tumor-targeting antibodies, following a material transfer agreement; a March 2025 collaboration with Simplex to advance an AI-driven ENPP1 inhibitor for cancer immunotherapy; implementation of a second-generation co-CEO structure with Jo Gyu-seok and Choi Ji-hyun in March 2025 amid record 2024 revenues of KRW 3.083 trillion and operating profit up 54.5% to KRW 316 billion; and ongoing preclinical advancement of lead candidate SJN314 (MRGPRX2 antagonist).