abatacept vs hydroxychloroquine
Side-by-side comparison of abatacept and hydroxychloroquine Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Orencia
Plaquenil
Orencia is a medicine that helps to reduce inflammation. It is used to treat rheumatoid arthritis, juvenile idiopathic arthritis, and psoriatic arthritis.
Hydroxychloroquine is a drug used to treat or prevent malaria, and to treat certain autoimmune diseases. It works by interfering with the immune system and by killing malaria parasites.
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.
This medicine can treat uncomplicated malaria caused by certain parasites. It can also prevent malaria in areas where the parasites are not resistant to the drug. Hydroxychloroquine also treats rheumatoid arthritis, systemic lupus erythematosus, and chronic discoid lupus erythematosus.
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.
Hydroxychloroquine is an antimalarial and antirheumatic drug. It is thought to work by interfering with the immune system's activity. It also stops the growth of malaria parasites in red blood cells.
- • Headache
- • Upper respiratory tract infection (like a cold)
- • Runny nose
- • Nausea
- • Nausea
- • Vomiting
- • Diarrhea
- • Abdominal pain
- • Fatigue
- The medicine is not working 38,612
- Rheumatoid arthritis 23,596
- Pain 21,295
- Joint pain 20,151
- Swollen joint 19,709
- The medicine did not work 20,457
- Using the medicine for a condition it is not approved for 15,128
- Rheumatoid arthritis 12,921
- Pain 10,409
- Joint pain 9,276
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.
This drug can cause heart problems, including a weakened heart muscle and irregular heartbeats. It can also cause irreversible damage to your retina, so regular eye exams are needed. This medicine can also cause serious skin reactions. If you have psoriasis or porphyria, talk to your doctor before taking this medicine. It can also cause liver and kidney problems.
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. This drug can cross the placenta, but studies haven't shown a risk of major birth defects. Talk to your doctor about the risks and benefits of taking this medicine while pregnant. Hydroxychloroquine passes into breast milk. Talk to your doctor about breastfeeding while taking this medicine.
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How to Read This abatacept vs hydroxychloroquine Comparison
abatacept is classified in the T-Cell Co-Stimulation Modulator drug class, while hydroxychloroquine sits within the Disease-Modifying Antirheumatic Drug (DMARD) 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 hydroxychloroquine has 68,191. 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 hydroxychloroquine — 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.