Jeil Pharm is a KOSPI-listed prescription drug company whose business is split between selling in-licensed products from multinational pharmaceutical firms (co-promotion) and selling self-developed products.
In recent years the company has pursued a structural shift toward greater self-developed product exposure, with the product sales ratio rising from around 20% in 2022 to roughly 30% recently.
Its flagship in-house product is the GERD drug Jaqubo (zastaprazan), developed by its drug-development subsidiary Onconic Therapeutics, which has quickly established a three-way competitive position alongside K-CAB and Fexuprazan in the domestic P-CAB (potassium-competitive acid blocker) market.
In the chronic disease area, Jeil Pharm also holds a generic diabetes combination drug, Jepoga Duo SR, participating in the SGLT-2/DPP-4 inhibitor market.
On the trading products side, the company had long maintained co-promotion contracts with Viatris Korea (Lyrica, Celebrex, Neurontin) and Takeda Korea (Lansoprazole LFDT, Dexilant DR), but these contracts ended in the first quarter of 2025, sharply shrinking its trading-product revenue base.
Its R&D subsidiary Onconic Therapeutics is also developing a dual-target anticancer drug candidate called Nesuparib, currently in Phase 2, while Jeil Pharm itself is advancing an oral diabetes drug candidate, JP-2266, also in Phase 2.
Manufacturing takes place at facilities including the Munmak plant, and the company is expanding production lines to support growing Jaqubo sales.
Beyond domestic sales, Jaqubo has been licensed out to pharmaceutical partners in more than 20 countries including China, India, and Mexico as part of its global expansion strategy.