Olumiant

Warnings and Precautions ( 5.8 ) 06/2026

1 INDICATIONS AND USAGE OLUMIANT ® is a Janus kinase (JAK) inhibitor indicated for: the treatment of adult patients with moderately to severely active rheumatoid arthritis who have had an inadequate response to one or more TNF blockers. ( 1.1 ) Limitations of Use : Not recommended for use in combination with other JAK inhibitors, biologic DMARDs, or with potent immunosuppressants such as azathioprine and cyclosporine. ( 1.1 ) the treatment of COVID-19 in hospitalized adults requiring supplemental oxygen, non-invasive or invasive mechanical ventilation, or ECMO. ( 1.2 ) the treatment of adult patients with severe alopecia areata. ( 1.3 ) Limitations of Use : Not recommended for use in combination with other JAK inhibitors, biologic immunomodulators, cyclosporine or other potent immunosuppressants. ( 1.3 ) 1.1 Rheumatoid Arthritis OLUMIANT ® (baricitinib) is indicated for the treatment of adult patients with moderately to severely active rheumatoid arthritis who have had an inadequate response to one or more tumor necrosis factor (TNF) blockers. Limitations of Use : Not recommended for use in combination with other JAK inhibitors, biologic disease-modifying antirheumatic drugs (DMARDs), or with potent immunosuppressants such as azathioprine and cyclosporine. 1.2 Coronavirus Disease 2019 (COVID-19) OLUMIANT is indicated for the treatment of coronavirus disease 2019 (COVID-19) in hospitalized adults requiring supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation (ECMO). 1.3 Alopecia Areata OLUMIANT is indicated for the treatment of adult patients with severe alopecia areata. Limitations of Use : Not recommended for use in combination with other JAK inhibitors, biologic immunomodulators, cyclosporine or other potent immunosuppressants.

2 DOSAGE AND ADMINISTRATION Administration Instructions : See the full prescribing information for recommended evaluations and immunizations prior to treatment. ( 2.1 ) Rheumatoid Arthritis and Alopecia Areata: Avoid initiation or interrupt OLUMIANT in patients with anemia (hemoglobin <8 g/dL), lymphopenia (ALC <500 cells/mm 3 ) or neutropenia (ANC <1000 cells/mm 3 ). ( 2.1 , 2.5 , 5.9 ) COVID-19: Avoid initiation or interrupt OLUMIANT in patients with lymphopenia (ALC <200 cells/mm 3 ) or neutropenia (ANC <500 cells/mm 3 ). ( 2.1 , 2.5 , 5.9 ) Recommended Dosage : Rheumatoid Arthritis: 2 mg once daily. ( 2.2 ) OLUMIANT may be used as monotherapy or in combination with methotrexate or other non-biologic DMARDs. ( 2.2 ) COVID-19: 4 mg once daily for up to 14 days. ( 2.3 ) Alopecia Areata: 2 mg once daily. Increase to 4 mg once daily, if the response to treatment is not adequate. ( 2.4 ) For patients with nearly complete or complete scalp hair loss, with or without substantial eyelash or eyebrow hair loss, consider treating with 4 mg once daily. ( 2.4 ) Reduce the dose to 2 mg once daily when an adequate response has been achieved. ( 2.4 ) Dosage Modifications in Patients with Renal or Hepatic Impairment, or Cytopenias See the full prescribing information for dosage modifications by indication. ( 2.5 , 2.6 , 5.9 ) 2.1 Recommended Evaluations and Immunization Prior to Treatment Initiation Prior to OLUMIANT treatment initiation, consider performing the following evaluations: Active and latent tuberculosis (TB) infection evaluation – OLUMIANT should not be given to patients with active tuberculosis (TB). If latent infection is positive in patients with rheumatoid arthritis or alopecia areata, consider treatment for TB prior to OLUMIANT use [see Warnings and Precautions ( 5.1 )] . Viral hepatitis screening in accordance with clinical guidelines [see Warnings and Precautions ( 5.1 )] . Complete blood count – Assess baseline values and verify whether treatment can be initiated: - In patients with rheumatoid arthritis or alopecia areata, OLUMIANT initiation is not recommended in patients with an absolute lymphocyte count (ALC) <500 cells/μl, absolute neutrophil count (ANC) <1000 cells/μl, or hemoglobin level <8 g/dL. - In patients with COVID-19, OLUMIANT initiation is not recommended if the ALC is <200 cells/μl or if the ANC is <500 cells/μl. Monitor complete blood counts during treatment and modify dosage as recommended [see Dosage and Administration ( 2.5 ) and Warnings and Precautions ( 5.7 )] . Baseline hepatic and renal function – Assess baseline values and monitor patients for laboratory changes. Modify dosage based on hepatic and renal impairment, and laboratory abnormalities [see Dosage and Administration ( 2.5 ) and Warnings and Precautions ( 5.7 )] . In patients with rheumatoid arthritis or alopecia areata, update immunizations in agreement with current immunization guidelines [see Warnings and Precautions ( 5.10 )] . 2.2 Dosage Recommendations in Rheumatoid Arthritis The recommended dosage of OLUMIANT is 2 mg once daily orally, with or without food [see Clinical Pharmacology ( 12.3 )] . An alternative administration for patients unable to swallow tablets may be used [see Dosage and Administration ( 2.8 )] . OLUMIANT may be used as monotherapy or in combination with methotrexate or other non-biologic DMARDs. 2.3 Dosage Recommendations in COVID-19 The recommended dosage of OLUMIANT for adults is 4 mg once daily orally, with or without food, for 14 days or until hospital discharge, whichever occurs first. An alternative administration for patients unable to swallow tablets may be used [see Dosage and Administration ( 2.8 )] . 2.4 Dosage Recommendations in Alopecia Areata The recommended dosage of OLUMIANT is 2 mg once daily orally, with or without food. Increase to 4 mg once daily if the response to treatment is not adequate. For patients with nearly complete or complete scalp hair loss, with or without substantial eyelash or e …

3 DOSAGE FORMS AND STRENGTHS OLUMIANT is available as debossed, film-coated tablets: 1 mg tablet contains a recessed area on each face of the tablet surface, is very light pink, round, debossed with “Lilly” on one side and “1” on the other. 2 mg tablet contains a recessed area on each face of the tablet surface, is light pink, oblong, debossed with “Lilly” on one side and “2” on the other. 4 mg tablet contains a recessed area on each face of the tablet surface, is medium pink, round, debossed with “Lilly” on one side and “4” on the other. Tablets: 4 mg, 2 mg, 1 mg ( 3 )

4 CONTRAINDICATIONS None. None.

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Serious Infections [see Warnings and Precautions ( 5.1 )] Mortality [see Warnings and Precautions ( 5.2 )] Malignancy and Lymphoproliferative Disorders [see Warnings and Precautions ( 5.3 )] Major Adverse Cardiovascular Events [see Warnings and Precautions ( 5.4 )] Thrombosis [see Warnings and Precautions ( 5.5 )] Hypersensitivity [see Warnings and Precautions ( 5.6 )] Gastrointestinal Perforations [see Warnings and Precautions ( 5.7 )] Hypoglycemia in Patients with Diabetes [see Warnings and Precautions ( 5.8 )] Laboratory Abnormalities [see Warnings and Precautions ( 5.9 )] Adverse reactions reported in clinical trials (≥1%) are: Rheumatoid Arthritis : upper respiratory tract infections (URTIs), nausea, herpes simplex, and herpes zoster. ( 6.1 ) COVID-19: increases of liver enzymes, thrombocytosis, creatine phosphokinase increases, neutropenia, deep vein thrombosis, pulmonary embolism, and urinary tract infection (UTI) ( 6.1 ) Alopecia Areata : URTIs, headache, acne, hyperlipidemia, creatine phosphokinase increase, UTI, liver enzyme elevations, folliculitis, fatigue, lower respiratory tract infections, nausea, genital Candida infections, anemia, neutropenia, abdominal pain, herpes zoster, and weight increase ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice. Adverse Reactions in Patients with Rheumatoid Arthritis The safety of OLUMIANT was evaluated in six randomized double-blind placebo-controlled studies (three Phase 2, three Phase 3) and a long-term extension study in patients with moderately to severely active RA. Patients were randomized to placebo (1070 patients), OLUMIANT 2 mg (479 patients), or baricitinib 4 mg (997 patients). Patients could be switched to baricitinib 4 mg from placebo or OLUMIANT 2 mg from as early as Week 12 depending on the study design. All patients initially randomized to placebo were switched to baricitinib 4 mg by Week 24. During the 16-week treatment period, adverse events leading to discontinuation of treatment were reported by 35 patients (11.4 per 100 patient-years) treated with placebo, 17 patients (12.1 per 100 patient-years) with OLUMIANT 2 mg, and 40 patients (13.4 per 100 patient-years) treated with baricitinib 4 mg. During 0 to 52-week exposure, adverse events leading to discontinuation of treatment were reported by 31 patients (9.2 per 100 patient-years) with OLUMIANT 2 mg, and 92 patients (10.2 per 100 patient-years) treated with baricitinib 4 mg. Overall Infections – During the 16-week treatment period, infections were reported by 253 patients (82.1 per 100 patient-years) treated with placebo, 139 patients (99.1 per 100 patient-years) treated with OLUMIANT 2 mg, and 298 patients (100.1 per 100 patient-years) treated with baricitinib 4 mg. During 0 to 52-week exposure, infections were reported by 200 patients (59.6 per 100 patients-years) treated with OLUMIANT 2 mg, and 500 patients (55.3 per 100 patient-years) treated with baricitinib 4 mg. In the 0 to 52-week exposure population, the most commonly reported infections with OLUMIANT were viral upper respiratory tract infection, upper respiratory tract infection, urinary tract infection, and bronchitis. Serious Infections – During the 16-week treatment period, serious infections were reported in 13 patients (4.2 per 100 patient-years) treated with placebo, 5 patients (3.6 per 100 patient-years) treated with OLUMIANT 2 mg, and 11 patients (3.7 per 100 patient-years) treated with …

7 DRUG INTERACTIONS In patients taking strong Organic Anion Transporter 3 (OAT3) inhibitors (e.g., probenecid) the recommended dosage should be reduced. ( 2.7 , 7.1 ) 7.1 Strong OAT3 Inhibitors Baricitinib exposure is increased when OLUMIANT is co-administered with strong OAT3 inhibitors (such as probenecid), hence the dosage of baricitinib should be reduced by half the recommended dose [see Dosage and Administration ( 2.2 , 2.3 ) and Clinical Pharmacology ( 12.3 )] . 7.2 Other JAK Inhibitors or Biologic DMARDs OLUMIANT has not been studied in combination with other JAK inhibitors or with biologic DMARDs [see Indications and Usage ( 1.1 , 1.2 )] .

8 USE IN SPECIFIC POPULATIONS Hepatic Impairment : Not recommended in patients with RA or AA and severe hepatic impairment. OLUMIANT has not been studied in patients with COVID-19 and severe hepatic impairment. ( 2.5 , 8.6 ) Renal Impairment : Not recommended in COVID-19 patients with eGFR <15 mL/min/1.73m 2 , who are on dialysis, have ESRD, or acute kidney injury. OLUMIANT is not recommend in patients with RA or AA with eGFR <30 mL/min/1.73m 2 . ( 2.6 , 8.7 ) Pregnancy : Based on animal data, may cause fetal harm. ( 8.1 , 8.3 ) Lactation : Advise not to breastfeed. ( 8.2 ) 8.1 Pregnancy Risk Summary Based on the findings from animal reproduction studies, OLUMIANT may cause fetal harm during pregnancy. Available data from clinical trials and postmarketing case reports with OLUMIANT exposure in pregnancy are insufficient to inform a drug-associated risk for major birth defects, miscarriage, or other adverse maternal or fetal outcomes. There are no human data on chronic baricitinib exposure throughout pregnancy. There are risks to the mother and the fetus associated with rheumatoid arthritis in pregnancy (see Clinical Considerations) . Consider the risks and benefits with chronic use of OLUMIANT during pregnancy. In animal embryo-fetal development studies, oral baricitinib administration to pregnant rats and rabbits at exposures equal to and greater than approximately 11 and 46 times the maximum recommended human dose (MRHD) of 4 mg/day, respectively, resulted in reduced fetal body weights, increased embryolethality (rabbits only), and dose-related increases in skeletal malformations. No developmental toxicity was observed in pregnant rats and rabbits treated with oral baricitinib during organogenesis at approximately 2 and 7 times the exposure at the MRHD, respectively. In a pre- and post-natal development study in pregnant female rats, oral baricitinib administration at exposures approximately 24 times the MRHD resulted in reduction in pup viability (increased incidence of stillborn pups and early neonatal deaths), decreased fetal birth weight, reduced fetal body weight gain, decreased cytotoxic T cells on post-natal day (PND) 35 with evidence of recovery by PND 65, and developmental delays that might be attributable to decreased body weight gain. No developmental toxicity was observed at an exposure approximately 5 times the exposure at the MRHD (see Data) . The background risks of major birth defects and miscarriage for the indicated population(s) are unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. Report pregnancies to Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979). Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Published data suggest that increased disease activity is associated with the risk of developing adverse pregnancy outcomes in women with rheumatoid arthritis. Adverse pregnancy outcomes include preterm delivery (before 37 weeks of gestation), low birth weight (less than 2500 g) infants, and small for gestational age at birth. Data Animal Data In an embryofetal development study in pregnant rats, dosed orally during the period of organogenesis from gestation days 6 to 17, baricitinib was teratogenic (skeletal malformations that consisted of bent limb bones and rib anomalies) at exposures equal to or greater than approximately 11 times the MRHD (on an AUC basis at maternal oral doses of 10 mg/kg/day and higher). No developmental toxicity was observed in rats at an exposure approximately 2 times the MRHD (on an AUC basis at a maternal oral dose of 2 mg/kg/day). In an embryofetal development study in pregnant rabbits, dosed orally during the period of organogenesis from gestation days 7 to 20, embryolethality, decreased fetal body weights, and skeletal malformati …

12.1 Mechanism of Action Baricitinib is a Janus kinase (JAK) inhibitor. JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function. Within the signaling pathway, JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression. Baricitinib modulates the signaling pathway at the point of JAKs, preventing the phosphorylation and activation of STATs. JAK enzymes transmit cytokine signaling through their pairing (e.g., JAK1/JAK2, JAK1/JAK3, JAK1/TYK2, JAK2/JAK2, JAK2/TYK2). In cell-free isolated enzyme assays, baricitinib had greater inhibitory potency at JAK1, JAK2 and TYK2 relative to JAK3. In human leukocytes, baricitinib inhibited cytokine induced STAT phosphorylation mediated by JAK1/JAK2, JAK1/JAK3, JAK1/TYK2, or JAK2/TYK2 with comparable potencies. However, the relevance of inhibition of specific JAK enzymes to therapeutic effectiveness is not currently known.

11 DESCRIPTION OLUMIANT (baricitinib) is a Janus kinase (JAK) inhibitor with the chemical name {1-(ethylsulfonyl)-3-[4-(7 H -pyrrolo[2,3- d ]pyrimidin-4-yl)-1 H -pyrazol-1-yl]azetidin-3-yl}acetonitrile. Baricitinib has an empirical formula of C 16 H 17 N 7 O 2 S and a molecular weight of 371.42. Baricitinib has the following structural formula: OLUMIANT tablets contain a recessed area on each face of the tablet surface and are available for oral administration as debossed, film-coated tablets. The 1 mg tablet is very light pink, round, debossed with “Lilly” on one side and “1” on the other. The 2 mg tablet is light pink, oblong, debossed with “Lilly” on one side and “2” on the other. The 4 mg tablet is medium pink, round, debossed with “Lilly” on one side and “4” on the other. Each tablet contains 1, 2, or 4 mg of baricitinib and the following inactive ingredients: croscarmellose sodium, ferric oxide, lecithin (soya), magnesium stearate, mannitol, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, talc and titanium dioxide. Structural Formula

10 OVERDOSAGE Single doses up to 40 mg and multiple doses of up to 20 mg daily for 10 days have been administered in clinical trials without dose-limiting toxicity. Pharmacokinetic data of a single dose of 40 mg in healthy volunteers indicate that more than 90% of the administered dose is expected to be eliminated within 24 hours. In case of an overdose, it is recommended that the patient should be monitored for signs and symptoms of adverse reactions. Patients who develop adverse reactions should receive appropriate treatment.

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied OLUMIANT for oral administration is available as debossed, film-coated, tablets. Each tablet contains a recessed area on each face of the tablet surface. OLUMIANT Tablets 1 mg 2 mg 4 mg Color Very Light Pink Light Pink Medium Pink Shape Round Oblong Round Identification Lilly Lilly Lilly 1 2 4 NDC Codes Bottle of 30 0002-4732-30 0002-4182-30 0002-4479-30 16.2 Storage and Handling Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature] . Keep out of reach of children.

16.1 How Supplied OLUMIANT for oral administration is available as debossed, film-coated, tablets. Each tablet contains a recessed area on each face of the tablet surface. OLUMIANT Tablets 1 mg 2 mg 4 mg Color Very Light Pink Light Pink Medium Pink Shape Round Oblong Round Identification Lilly Lilly Lilly 1 2 4 NDC Codes Bottle of 30 0002-4732-30 0002-4182-30 0002-4479-30