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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.

Tacrolimus

Last updated: June 21, 2026
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Tacrolimus is a medication. According to the FDA-approved label, Tacrolimus extended-release capsules is indicated for the prophylaxis of organ rejection in kidney transplant patients in combination with other immunosuppressants in adult patients who can swallow capsules intact [see Clinical Studies ( 14.1 ), ( 14.2 )] . FAERS contains 152,097 submissions naming this drug from 2001 through 2026; the top three reactions cited are off label use, drug ineffective, and drug interaction.

Most-Reported Reactions

Counts of the reactions most often cited in FAERS submissions that named Tacrolimus. 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.

OFF LABEL USE 14,690 (9.7%) DRUG INEFFECTIVE 10,087 (6.6%) DRUG INTERACTION 6,335 (4.2%) PRODUCT USE IN UNAPPROVED INDICATION 6,247 (4.1%) ACUTE KIDNEY INJURY 5,968 (3.9%) DIARRHOEA 5,841 (3.8%) TRANSPLANT REJECTION 4,979 (3.3%) DEATH 4,970 (3.3%) PYREXIA 4,804 (3.2%) CYTOMEGALOVIRUS INFECTION 4,560 (3.0%) PNEUMONIA 4,460 (2.9%) COVID-19 3,926 (2.6%) TOXICITY TO VARIOUS AGENTS 3,811 (2.5%) RENAL IMPAIRMENT 3,626 (2.4%) SEPSIS 3,462 (2.3%)

Patient Demographics

Patient sex and age across the FAERS submissions that named Tacrolimus. 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 152,097 FAERS submissions that named Tacrolimus. 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 25,250 (16.6%) HOSPITALIZATION 61,363 (40.3%) LIFE-THREATENING 11,923 (7.8%) DISABLING 2,218 (1.5%)

Submissions Per Quarter

Quarterly count of FAERS submissions that named Tacrolimus. 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.

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 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 Tacrolimus. This is the authoritative source on indications, warnings, and known adverse reactions.

Indications

1 INDICATIONS AND USAGE Tacrolimus extended-release capsules is indicated for the prophylaxis of organ rejection in kidney transplant patients in combination with other immunosuppressants in adult patients who can swallow capsules intact [see Clinical Studies ( 14.1 ), ( 14.2 )] . Pediatric use information is approved for Astellas Pharma US, Inc.'s ASTAGRAF XL (tacrolimus extended-release capsules). However, due to Astellas Pharma US, Inc.'s marketing exclusivity rights, this drug product is not labeled with that information. Tacrolimus extended-release capsules is a calcineurin-inhibitor immunosuppressant indicated for the prophylaxis of organ rejection in kidney transplant patients in combination with other immunosuppressants in adult patients who can swallow capsules intact. ( 1 , 14.1 , 14.2 )

Adverse Reactions (from label)

6 ADVERSE REACTIONS The following clinically significant adverse drug reactions are discussed in greater detail in other sections of labeling: Lymphoma and Other Malignancies [see Warnings and Precautions ( 5.1 )] Serious Infections [see Warnings and Precautions ( 5.2 )] Increased Mortality in Female Liver Transplant Patients [see Warnings and Precautions ( 5.3 )] New Onset Diabetes after Transplant [see Warnings and Precautions ( 5.5 )] Nephrotoxicity due to Tacrolimus Extended-Release Capsules and Drug Interactions [see Warnings and Precautions ( 5.6 )] Neurotoxicity [see Warnings and Precautions ( 5.7 )] Hyperkalemia [see Warnings and Precautions ( 5.8 )] Hypertension [see Warnings and Precautions ( 5.9 )] QT Prolongation [see Warnings and Precautions ( 5.11 )] Pure Red Cell Aplasia [see Warnings and Precautions ( 5.13 )] Thrombotic Microangiopathy, Including Hemolytic Uremic Syndrome and Thrombotic Thrombocytopenic Purpura [see Warnings and Precautions (5.14) ] The most common adverse reactions (≥ 30%) are: diarrhea, constipation, nausea, peripheral edema, tremor and anemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact eVenus Pharmaceutical Laboratories, Inc. (continues in label)

FDA label effective date: 2024-02-07

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.