abatacept vs baricitinib
Side-by-side comparison of abatacept and baricitinib Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Orencia
Olumiant
Orencia is a medicine that helps to reduce inflammation. It is used to treat rheumatoid arthritis, juvenile idiopathic arthritis, and psoriatic arthritis.
Olumiant contains baricitinib. It is a medicine that can lower the activity of your immune system.
Orencia treats rheumatoid arthritis in adults. It also treats polyarticular juvenile idiopathic arthritis in patients 2 years and older. Orencia can also treat active psoriatic arthritis in patients 2 years and older. Finally, it can prevent acute graft versus host disease after a stem cell transplant.
Olumiant treats rheumatoid arthritis in adults when other medicines have not worked well. Rheumatoid arthritis is a disease that causes pain, swelling, and stiffness in the joints. Olumiant can also be used to treat alopecia areata, a condition that causes patchy hair loss.
Orencia works by blocking the activity of certain immune cells called T cells. These T cells can cause inflammation and damage to your joints and other tissues. By blocking T cell activity, Orencia can help reduce inflammation and relieve your symptoms.
Olumiant blocks certain enzymes called Janus kinases (JAKs) inside your cells. These enzymes help cause inflammation. By blocking them, Olumiant can reduce inflammation and other symptoms of rheumatoid arthritis and alopecia areata.
- • Headache
- • Upper respiratory tract infection (like a cold)
- • Runny nose
- • Nausea
- • Upper respiratory tract infections (like common cold)
- • Nausea
- • Headache
- • Diarrhea
- • Herpes zoster (shingles)
- The medicine is not working 38,612
- Rheumatoid arthritis 23,596
- Pain 21,295
- Joint pain 20,151
- Swollen joint 19,709
- Medicine not working 709
- Using the medicine for something it's not approved for 655
- COVID-19 439
- Rheumatoid arthritis 352
- Blood clot in the lung 294
Using Orencia with a TNF antagonist or other biologic medicines can raise your risk of serious infections. Tell your doctor if you have any signs of infection, such as fever, cough, or sore throat. Orencia can also cause allergic reactions, including anaphylaxis. Get medical help right away if you have trouble breathing, swelling, or hives.
Olumiant can increase your risk of serious infections. Tell your doctor right away if you have any signs of an infection, such as fever, cough, or body aches. Blood clots in the lungs and legs, some cancers, heart attack, stroke, and death have happened in people taking Olumiant.
There is not enough information about Orencia use in pregnant women to know if it is safe. Talk to your doctor if you are pregnant, plan to become pregnant, or are breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. Olumiant may harm your unborn baby. It is not known if Olumiant passes into breast milk, so talk to your doctor about the best way to feed your baby if you take Olumiant.
Also Compare — Nearby Drugs
Compare baricitinib with
How to Read This abatacept vs baricitinib Comparison
abatacept is classified in the T-Cell Co-Stimulation Modulator drug class, while baricitinib sits within the JAK Inhibitor class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, abatacept has 123,363 submissions while baricitinib has 2,449. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between abatacept and baricitinib — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.