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This page presents data from the FDA Adverse Event Reporting System (FAERS) and the FDA-approved drug label. A report submitted to FAERS does not prove a drug caused the reported event. Always consult a healthcare provider about medications.

Tofacitinib

Last updated: June 20, 2026
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Tofacitinib is a medication. According to the FDA-approved label, Tofacitinib is a Janus kinase (JAK) inhibitor indicated for: Rheumatoid Arthritis: Tofacitinib extended-release tablets are indicated for the treatment of adult patients with moderately to severely active rheumatoid arthritis who have had an inadequate response or intolerance to. FAERS contains 182,680 submissions naming this drug from 2008 through 2026; the top three reactions cited are drug ineffective, pain, and arthralgia.

Most-Reported Reactions

Counts of the reactions most often cited in FAERS submissions that named Tofacitinib. Inclusion here does not establish causation - submitters describe what was observed, not what was confirmed. One submission can list several reactions, so the totals exceed the report count.

DRUG INEFFECTIVE 43,682 (23.9%) PAIN 25,882 (14.2%) ARTHRALGIA 19,814 (10.8%) CONDITION AGGRAVATED 19,599 (10.7%) RHEUMATOID ARTHRITIS 18,924 (10.4%) FATIGUE 16,715 (9.1%) OFF LABEL USE 14,971 (8.2%) JOINT SWELLING 14,574 (8.0%) HEADACHE 13,533 (7.4%) RASH 12,041 (6.6%) DRUG INTOLERANCE 11,824 (6.5%) MALAISE 10,616 (5.8%) PAIN IN EXTREMITY 10,355 (5.7%) ABDOMINAL DISCOMFORT 10,270 (5.6%) NAUSEA 10,045 (5.5%)

Patient Demographics

Patient sex and age across the FAERS submissions that named Tofacitinib. Percentages here are computed only from submissions where these fields were filled in - many leave them blank.

By Sex

Female Male Unknown

By Age Group

0-17 18-44 45-64 65+

Severity Outcomes

Severity flags recorded across the 182,680 FAERS submissions that named Tofacitinib. Each bar shows the count of those reports carrying that flag. A single case can carry more than one (a hospitalization that became life-threatening, for example), so these bars are independent rates - they don't sum to 100%. Inclusion of a case under any flag does not establish that the drug caused the outcome.

DEATH 8,918 (4.9%) HOSPITALIZATION 24,916 (13.6%) LIFE-THREATENING 5,932 (3.2%) DISABLING 8,450 (4.6%)

Submissions Per Quarter

Quarterly count of FAERS submissions that named Tofacitinib. Ups and downs on this chart can track prescribing volume, news cycles, or shifts in how reports get filed, rather than the drug becoming safer or more dangerous.

2008 2009 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

From the FDA-Approved Label

Excerpts from the official FDA-approved prescribing information for Tofacitinib. This is the authoritative source on indications, warnings, and known adverse reactions.

Indications

1 INDICATIONS AND USAGE Tofacitinib is a Janus kinase (JAK) inhibitor indicated for: Rheumatoid Arthritis: Tofacitinib extended-release tablets are indicated for the treatment of adult patients with moderately to severely active rheumatoid arthritis who have had an inadequate response or intolerance to one or more TNF blockers. Limitations of Use: Use of tofacitinib extended-release tablets in combination with biologic DMARDs or potent immunosuppressants such as azathioprine and cyclosporine is not recommended. ( 1.1 ) Psoriatic Arthritis: Tofacitinib extended-release tablets are indicated for the treatment of adult patients with active psoriatic arthritis who have had an inadequate response or intolerance to one or more TNF blockers. Limitations of Use: Use of tofacitinib extended-release tablets in combination with biologic DMARDs or potent immunosuppressants such as azathioprine and cyclosporine is not recommended. ( 1.2 ) Ankylosing Spondylitis: Tofacitinib extended-release tablets are indicated for the treatment of adult patients with active ankylosing spondylitis who have had an inadequate response or intolerance to one or more TNF blockers. (continues in label)

Adverse Reactions (from label)

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 )] Gastrointestinal Perforations [see Warnings and Precautions ( 5.6 )] Hypersensitivity [see Warnings and Precautions ( 5.7 )] Laboratory Abnormalities [see Warnings and Precautions ( 5.8 )] Most common adverse reactions are: Rheumatoid Arthritis, Psoriatic Arthritis, and Ankylosing Spondylitis : Reported during the first 3 months in rheumatoid arthritis placebo-controlled clinical trials and occurring in ≥2% of patients treated with tofacitinib monotherapy or in combination with DMARDs: upper respiratory tract infection, nasopharyngitis, diarrhea, and headache. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Ajanta Pharma USA Inc. at 855-664-7744 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6. (continues in label)

FDA label effective date: 2026-01-25

Disclaimer

AdverseEvent.ai is not affiliated with the FDA. Adverse-event counts come from the FDA Adverse Event Reporting System (FAERS). Drug labels come from the FDA drug label dataset. A report submitted to FAERS does not prove a drug caused the reported event — always consult a healthcare provider about medications. This site is for informational purposes only and is not medical advice.