South Korea Diabetes Drugs Market Size & Share Analysis - Growth Trends & Forecasts (2025 - 2030)

South Korea Diabetes Drugs Market Trends and Insights

Rising Diabetes Prevalence and Obesity Burden

Diabetes prevalence among adults aged 30 and older stood at 16.7% in 2024, making the disease Korea’s largest contributor to disability-adjusted life years. Obesity remains the key co-morbidity, as 73% of patients are overweight or obese.^{[1]Sung-Hee Oh, “Prevalence and Socioeconomic Burden of Diabetes Mellitus in South Korean Adults,” BMC Public Health, bmcpublichealth.biomedcentral.com} Sugar intake trends deepen the challenge, with one-fifth of children exceeding recommended levels.^{[2]Hyejin Yu and Sang-Jin Chung, “Total Sugar Intake and Its Contributed Foods by Age Groups in Koreans,” Korean Journal of Community Nutrition, kjcn.or.kr} Combined, these factors keep demand for established oral agents high while encouraging adoption of GLP-1 and sodium–glucose cotransporter-2 (SGLT-2)–based therapies. Lean diabetes, affecting 8.8% of patients, adds clinical complexity and underpins the need for personalised regimens.

Preference for Innovative and Combination Therapies

Updated Korean Diabetes Association guidance directs clinicians toward multi-mechanism regimens that optimise glycaemic control, cardiovascular protection, and renal outcomes. Phase 3 data on a triple agonist (efpeglenatide) targeting GLP-1, glucose-dependent insulinotropic polypeptide, and glucagon receptors highlight the climate of clinically oriented innovation. Low-dose lobeglitazone studies demonstrate non-inferior efficacy with fewer side effects, supporting wider adoption.^{[3]Soree Ryang et al., “REFIND Study on Low-Dose Lobeglitazone,” National Center for Biotechnology Information, ncbi.nlm.nih.gov}Market appetite for fixed-dose combinations is reinforced by the approval of the triple oral agent metformin-dapagliflozin-sitagliptin in 2025, offering simpler dosing and better adherence.

Ageing Population and Urban Lifestyles

Adults aged 65 and older form Korea’s fastest-growing demographic segment, and this group shows the highest diabetes incidence. Urban residents face amplified exposure to sedentary jobs and processed food intake, further raising risk. The Act on Integrated Support for Community Care mandates home-centric, digitally enabled chronic disease care from 2026. Pharmaceutical companies thus focus on elder-friendly formulations, remote monitoring devices, and adherence aids.

Government Reimbursement for Novel Agents

National Health Insurance has introduced value-based frameworks that reward clinical benefit while containing costs. Generic price indices, however, remain higher than those in many peer countries. Manufacturers, therefore, invest in real-world evidence dossiers to strengthen cost-effectiveness arguments. Risk-sharing agreements and conditional listings create opportunities for high-value products that deliver measurable outcomes.

Stringent Price Cuts and Reimbursement Delays

Aggressive cost-containment under the Drug Expenditure Rationalization Plan compresses margins for novel therapies. Generic price indices declined only marginally from 4.79 to 3.40 versus the United States benchmark between 2020 and 2022, signifying limited relief. Manufacturers face protracted negotiations, prompting strategic launches of evidence packages that document cardio-renal benefits and long-term cost offsets.

Safety Concerns, Including Ketoacidosis

Expanded use of SGLT-2 inhibitors and GLP-1 agents triggers vigilance over rare but serious adverse events such as ketoacidosis in elderly or renal-impaired patients. Post-marketing surveillance studies are therefore front-loaded to secure clinician confidence, sometimes delaying promotional momentum.

Segment Analysis

By Drug Class: Oral Agents Lead Despite Injectable Innovation

The South Korea diabetes drugs market size for oral agents stood at USD 472 million in 2024, accounting for 47.43% of total sales. SGLT-2 inhibitors and dipeptidyl peptidase-4 (DPP-4) inhibitors dominate prescribing volumes, supported by an 87.5% medication adherence rate among older adults. Nevertheless, non-insulin injectables are accelerating at a double-digit 10.03% CAGR as GLP-1 receptor agonists prove effective in weight control and cardio-renal protection. Cardiovascular-outcome trials continue to expand label indications, encouraging earlier initiation in high-risk patients. Low-dose lobeglitazone achieved non-inferior glucose reduction while lowering side-effect rates, exemplifying the quest for safer profiles. Fixed-dose triple combinations reduce pill burden and improve adherence, supporting treatment intensification without patient fatigue.

Within non-insulin injectables, patient acceptance is rising due to thinner needles, autoinjector devices, and once-weekly dosing. Biosimilar development and local fill-and-finish capacity are expected to moderate prices and alleviate shortages over the next five years. Oral GLP-1 development programmes, leveraging permeability enhancers and nanoparticle carriers, could blur class boundaries by 2030. Insulin remains indispensable for Type 1 and advanced Type 2 patients, and high-concentration formulations provide flexibility for dose-intensive regimens aimed at overcoming insulin resistance. 

Note: Segment shares of all individual segments available upon report purchase

By Diabetes Type: Type 2 Dominance Drives Growth

In 2024, Type 2 patients generated 88.72% of the South Korea diabetes drugs market. Rising obesity and ageing lift the Type 2 case load, pushing forecasts toward 29.2% prevalence in men and 19.7% in women by 2030. Early combination therapy adoption aims to counter comorbidity clusters of hypertension and dyslipidaemia, improving overall outcomes. Type 1 population remains smaller yet technologically sophisticated, relying on sensor-integrated pumps and rapid-acting analogues for tight control. Paediatric Type 2 options are still limited to metformin, insulin, and liraglutide, indicating a clinical gap that innovators may address with youth-specific dosing and devices.

Lean diabetes, defined by lower body-mass index yet impaired insulin secretion, commands research attention for its unique pathophysiology. Herbal adjuncts, including red ginseng extract, demonstrated modest fasting glucose reductions in prediabetic adults, hinting at culturally familiar complementary options. 

Note: Segment shares of all individual segments available upon report purchase

By Drug Origin: Biosimilars Gain Ground Against Innovators

Innovator brands commanded 64.82% of the South Korea diabetes drugs market share in 2024, but the biosimilar cohort is expanding at a 9.04% CAGR. Samsung Bioepis and GC Corp lead with diversified portfolios that encompass insulin, growth hormone, and monoclonal antibody biosimilars. Tiered pricing encourages early generic entry while rewarding innovation with temporary premium tiers. Domestic firms target complex injectables and high-volume oral agents, leveraging state incentives for biologics manufacturing. International alliances accelerate know-how transfer, as seen in HK inno.N’s GLP-1 collaboration.

Oramed’s oral insulin licence could erode innovators’ basal insulin share by offering needle-free convenience. Yet innovators retain differentiation through proprietary delivery systems, extended-release profiles, and continuous data connectivity.

By Distribution Channel: Digital Transformation Reshapes Access

Hospital pharmacies retained 52.67% of 2024 sales, reflecting the country’s specialist-led care model. The South Korea diabetes drugs market size handled by online pharmacies grew sharply after regulatory allowances for teleconsultations during the pandemic. Telemedicine platforms integrate e-prescriptions, point-of-care diagnostics, and doorstep delivery, giving chronic patients frictionless refills. Community pharmacies maintain patient education roles, particularly in suburban and rural locales where broadband constraints limit virtual care.

From 2026, community-care legislation will reimburse home-based monitoring devices and coaching apps. Continuous glucose monitors and sensor-augmented pumps require technical support, prompting certain chains to open specialist centres. Retail loyalty programmes that link drug refills with nutrition counselling and wearable data uploads differentiate offerings and build retention.

Note: Segment shares of all individual segments available upon report purchase

Geography Analysis

Regional diabetes patterns mirror demographic and lifestyle gradients. The Seoul-Incheon megalopolis exhibits the highest prevalence due to dense fast-food outlets, sedentary office work, and stress-related behaviours. Here, tertiary hospitals offer early access to GLP-1 and SGLT-2 therapies, accelerating urban uptake. Rural provinces, characterised by quicker population ageing and limited specialist supply, have less access to novel agents and rely more on generics and traditional oriental medicine. Government policy directs additional funding toward telemedicine and mobile clinics to equalise care standards.

Continuous-glucose-monitor penetration is highest in metropolitan school programmes aimed at early detection. Provincial centres adopt community-health-worker models that pair basic test strips with smartphone coaching, gradually bridging the technology gap. Manufacturing clusters in Gyeongbuk and Chungbuk provinces support local supply of metformin, gliclazide, and biosimilar insulin, reducing import dependence for essential medicines. National procurement frameworks adjust stock levels based on surge alerts for GLP-1 shortages broadcast by the World Health Organization. 

Urban lifestyle campaigns that promote active commuting and sugar-content labelling are likely to slow incidence growth in affluent districts, but socio-economic disparities persist, with lower-income boroughs reporting higher complication rates. Pharmacies in Busan are trialling blockchain-based traceability for high-value injectables, signalling regional experimentation with advanced supply-chain safeguards.