pharmacopeia
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Mechanism of action

Sourced from openFDA

Eribulin inhibits the growth phase of microtubules without affecting the shortening phase and sequesters tubulin into nonproductive aggregates. Eribulin exerts its effects via a tubulin-based antimitotic mechanism leading to G 2 /M cell-cycle block, disruption of mitotic spindles, and, ultimately, apoptotic cell death after prolonged mitotic blockage.

Indications

Sourced from openFDA
  • Eribulin mesylate injection is a microtubule inhibitor indicated for the treatment of patients with: Metastatic breast cancer who have previously received at least two chemotherapeutic regimens for the treatment of metastatic disease. Prior therapy should have included an anthracycline and a taxane in either the adjuvant or metastatic setting.ICD-10: C50.919

Contraindications

Sourced from openFDA
  • None.contraindicated

Dosage & administration

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Administer 1.4 mg/m 2 intravenously over 2 to 5 minutes on Days 1 and 8 of a 21-day cycle. ( 2.1 ) Reduce dose in patients with hepatic impairment or with moderate or severe renal impairment. ( 2.1 ) Do not mix with other drugs or administer with dextrose-containing solutions. ( 2.3 ) 2.1 Recommended Dose The recommended dose of eribulin mesylate injection is 1.4 mg/m 2 administered intravenously over 2 to 5 minutes on Days 1 and 8 of a 21-day cycle. The recommended dose of eribulin mesylate injection in patients with mild hepatic impairment (Child-Pugh A) is 1.1 mg/m 2 administered intravenously over 2 to 5 minutes on Days 1 and 8 of a 21-day cycle [see Use in Specific Populations ( 8.6 )] . The recommended dose of eribulin mesylate injection in patients with moderate hepatic impairment (Child-Pugh B) is 0.7 mg/m 2 administered intravenously over 2 to 5 minutes on Days 1 and 8 of a 21-day cycle [see Use in Specific Populations ( 8.6 )] . The recommended dose of eribulin mesylate injection in patients with moderate or severe renal impairment (creatinine clearance (CLcr) 15 to 49 mL/min) is 1.1 mg/m 2 administered intravenously over 2 to 5 minutes on Days 1 and 8 of a 21-day cycle [see Use in Specific Populations ( 8.7 )]. 2.2 Dose Modification Assess for peripheral neuropathy and obtain complete blood cell counts prior to each dose. Recommended dose delays • Do not administer eribulin mesylate injection on Day 1 or Day 8 for any of the following: - ANC < 1,000/mm 3 - Platelets < 75,000/mm 3 - Grade 3 or 4 non-hematological toxicities.

Warnings & precautions

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Neutropenia : Monitor peripheral blood cell counts and adjust dose as appropriate. ( 5.1 ) Peripheral Neuropathy : Monitor for signs of neuropathy. Manage with dose delay and adjustment. ( 5.2 ) Embryo-Fetal Toxicity : Can cause fetal harm. Advise females of reproductive potential of the potential risk to the fetus and to use effective contraception. ( 5.3 , 8.1 , 8.3 ) QT Prolongation : Monitor for prolonged QT intervals in patients with congestive heart failure, bradyarrhythmias, drugs known to prolong the QT interval, and electrolyte abnormalities. Avoid in patients with congenital long QT syndrome. ( 5.4 ) 5.1 Neutropenia In Study 1, severe neutropenia (ANC < 500/mm 3 ) lasting more than one week occurred in 12% (62/503) of patients with metastatic breast cancer, leading to discontinuation in <1% of patients. Febrile neutropenia (fever ≥38.5°C with Grade 3 or 4 neutropenia) occurred in 5% (23/503) of patients; two patients (0.4%) died from complications of febrile neutropenia [see Adverse Reactions ( 6.1 )] . In Study 1, patients with alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 3 × ULN (upper limit of normal) experienced a higher incidence of Grade 4 neutropenia and febrile neutropenia than patients with normal aminotransferase levels. Patients with bilirubin > 1.5 × ULN also had a higher incidence of Grade 4 neutropenia and febrile neutropenia. In Study 2, severe neutropenia (ANC < 500/mm 3 ) lasting more than one week occurred in 12% (26/222) of patients with liposarcoma or leiomyosarcoma.

Adverse reactions

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The most common adverse reactions (≥25%) in metastatic breast cancer were neutropenia, anemia, asthenia/fatigue, alopecia, peripheral neuropathy, nausea, and constipation. ( 6.1 ) The most common adverse reactions (≥25%) in liposarcoma and leiomyosarcoma were fatigue, nausea, alopecia, constipation, peripheral neuropathy, abdominal pain, and pyrexia. The most common (≥5%) Grade 3 to 4 laboratory abnormalities in liposarcoma and leiomyosarcoma were neutropenia, hypokalemia, and hypocalcemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Dr. Reddy’s Laboratories, Inc., at 1-888-375-3784 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in other clinical trials and may not reflect the rates observed in clinical practice. The following adverse reactions are discussed in detail in other sections of the labeling: Neutropenia [see Warnings and Precautions ( 5.1) ] Peripheral neuropathy [see Warnings and Precautions (5.2) ] QT prolongation [see Warnings and Precautions (5.4) ] In clinical trials, eribulin mesylate has been administered to 1,963 patients including 467 patients exposed to eribulin mesylate for 6 months or longer. The majority of the 1,963 patients were women (92%) with a median age of 55 years (range: 17 to 85 years). The racial and ethnic distribution was White (72%), Black (4%), Asian (9%), and other (3%).

Use in specific populations

Sourced from openFDA

Lactation: Do not breastfeed. ( 8.2 ) Hepatic Impairment: A lower starting dose is recommended for patients with mild (Child-Pugh A) and moderate (Child-Pugh B) hepatic impairment. Patients with severe hepatic impairment (Child-Pugh C) were not studied. ( 8.6 ) Renal Impairment: A lower starting dose is recommended for patients with moderate (CLcr 30 to 49 mL/min) or severe (CLcr 15 to 29 mL/min) renal impairment. ( 8.7 ) 8.1 Pregnancy Risk Summary Based on findings from an animal reproduction study and its mechanism of action, eribulin mesylate, can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology ( 12.1 )]. There are no available data on the use of eribulin mesylate during pregnancy. In an animal reproduction study, eribulin mesylate caused embryo-fetal toxicity when administered to pregnant rats during organogenesis at doses below the recommended human dose [see Data] . Advise pregnant women of the potential risk to a fetus. The estimated background risks of major birth defects and miscarriage for the indicated populations are unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically-recognized pregnancies is 2% to 4% and 15% to 20%, respectively.

Pharmacokinetics

Sourced from openFDA
Metabolism
The pharmacokinetics (PK) of eribulin is linear with a mean elimination half-life of approximately 40 hours, a mean volume of distribution of 43 L/m 2 to 114 L/m 2 and mean clearance of 1.16 L/hr/m 2 to 2.42 L/hr/m 2 over the dose range of 0.25 mg/m 2 to 4.0 mg/m 2 . The human plasma protein binding of eribulin at concentrations of 100 ng/mL to 1,000 ng/mL ranges from 49% to 65%.

Overdosage

Sourced from openFDA

Overdosage of eribulin mesylate has been reported at approximately 4 times the recommended dose, which resulted in Grade 3 neutropenia lasting seven days and a Grade 3 hypersensitivity reaction lasting one day. There is no known antidote for eribulin mesylate injection overdose.

Approval history

Sourced from openFDA
  • Nov 15, 2010NDANDA201532Eisai Inc
  • Apr 5, 2024ANDAANDA218047Gland
  • Jun 28, 2024ANDAANDA218281Jiangxi Kvvit Pharm
  • Jul 18, 2024ANDAANDA214850Long Grove Pharms
  • Oct 1, 2024ANDAANDA217250Baxter Hlthcare Corp
  • Mar 4, 2025ANDAANDA218743Chia Tai Tianqing
  • Jun 9, 2025ANDAANDA214310Sandoz
  • Jul 3, 2025ANDAANDA217473Dr Reddys

FAERS reports

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Reference statistics only. FAERS reports are voluntarily submitted and are not incidence rates, safety signals, or causal evidence. Counts reflect reporting volume — how often a reaction was reported, not how often it occurs. For decision-grade use, consult openFDA and the FAERS Public Dashboard directly.
3,687 total reports matchedLatest report Share = reports listing the reaction ÷ total matched reports. Rows can sum to >100% because a single report often lists multiple reactions.
  1. 1Neutropenia52914%
  2. 2Malignant Neoplasm Progression38110%
  3. 3Febrile Neutropenia3298.9%
  4. 4Myelosuppression3038.2%
  5. 5Pyrexia2145.8%
  6. 6Neuropathy Peripheral2125.7%
  7. 7Leukopenia2015.5%
  8. 8Interstitial Lung Disease1814.9%
  9. 9White Blood Cell Count Decreased1744.7%
  10. 10Neutrophil Count Decreased1694.6%
  11. 11Nausea1554.2%
  12. 12Fatigue1534.1%
  13. 13Asthenia1343.6%
  14. 14Pneumonia1213.3%
  15. 15Decreased Appetite1173.2%

Clinical trials

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The 10 most recently updated of 272 ClinicalTrials.gov registrations naming Eribulin as an intervention. Registration is not evidence of efficacy or safety — reference crosswalk only.

Frequently asked questions

How does Eribulin work?
Eribulin inhibits the growth phase of microtubules without affecting the shortening phase and sequesters tubulin into nonproductive aggregates. Eribulin exerts its effects via a tubulin-based antimitotic mechanism leading to G 2 /M cell-cycle block, disruption of mitotic spindles, and, ultimately, apoptotic cell death after prolonged mitotic blockage.
What is Eribulin used for?
According to FDA labeling, Eribulin carries indications including: Eribulin mesylate injection is a microtubule inhibitor indicated for the treatment of patients with: Metastatic breast cancer who have previously received at least two chemotherapeutic regimens for the treatment of metastatic disease. Prior therapy should have included an anthracycline and a taxane in either the adjuvant or metastatic setting.. This is a reference summary of labeled uses, not medical advice or a treatment recommendation.
What class of drug is Eribulin?
Eribulin is classified as Other antineoplastic agents, Microtubule Inhibitor, Tubulin Interactions, Decreased Cellular Migration, Decreased Mitosis, Increased Cellular Death, Microtubule Inhibition.
What are the brand names for Eribulin?
Eribulin is marketed under brand names including Halaven.
What are the contraindications for Eribulin?
Eribulin labeling lists contraindications including: None.. Always consult the full prescribing information and a clinician.
Note. Data for eribulin is illustrative MVP content compiled from public sources. pharmacopeia is for educational and informational use only and is not a substitute for professional medical advice.

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