Whan In Pharm Co., Ltd. manufactures and markets prescription pharmaceuticals primarily in South Korea, with a focus on central nervous system (CNS) drugs including anti-psychotics, anti-depressants, anti-epileptics, anti-dementia agents, and nootropics; cardiovascular treatments; gastrointestinal medications; analgesics and anti-inflammatories; antibiotics; antivirals; antihistamines; metabolic disorder therapies; respiratory products; osteoporosis preventives; and ulcer and liver protection drugs. Founded in 1978 and headquartered in Seoul's Songpa-gu district, the company generates the majority of its revenue from ethical drugs in the domestic market, supplemented by minor over-the-counter and other segments, while also engaging in real estate leasing. In recent years, Whan In Pharm has pursued production expansion through a proposed new facility at its Hwaseong plant to enhance manufacturing capacity for antibiotics, cardiovascular drugs, multivitamins, and other lines, alongside ongoing R&D investments in CNS innovations via connect-and-develop strategies, joint ventures, and global market entry preparations for generics and incrementally modified drugs.