What are the common side effects of vinblastine?

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Last updated: September 22, 2026 • View editorial policy

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Common Side Effects of Vinblastine

Almost all patients receiving vinblastine experience side effects, with bone marrow suppression (particularly neutropenia), constipation, and infusion site reactions being the most common adverse events. 1, 2

Most Frequent Side Effects

Hematologic Toxicity (Most Common and Dose-Limiting)

  • Leukopenia/Neutropenia: The most common adverse reaction and typically the dose-limiting factor 2

    • Occurs in approximately 82.5% of patients 3
    • Grade 3-4 neutropenia occurs in about 32.5% of cases 3
    • Neutropenia primarily manifests during weeks 2-3 of treatment 4
    • Febrile neutropenia: Reported in approximately 5% of patients 3

  • Thrombocytopenia: Less common (5-13% of patients), usually mild (Grade I) 3, 4

  • Anemia: Occurs in approximately 50% of patients, predominantly Grade I (93.3%) 4

Gastrointestinal Effects

  • Constipation: Reported in 3.5% of patients in ITP treatment 1
  • Nausea/vomiting: Generally mild and easily controlled with antiemetics 2
  • Diarrhea: Occurs in approximately 25% of patients 3
  • Inappetence: Reported in 7.5% of patients 3
  • Other GI effects include anorexia, abdominal pain, mouth vesiculation, and pharyngitis 2

Infusion Site Reactions

  • Vesication/inflammation at infusion site: Occurs in 10.5% of patients 1
  • Phlebitis and cellulitis: Can occur with extravasation 2
  • Sloughing: May develop if extravasation is significant 2

Dermatologic Effects

  • Alopecia: Common but frequently not total; hair may regrow during maintenance therapy 2

Less Common but Clinically Significant Side Effects

Neurologic Toxicity

  • Peripheral neuropathy: Less common with vinblastine than vincristine (27.8% with vincristine vs. lower rates with vinblastine) 1
  • Numbness of digits (paresthesias), loss of deep tendon reflexes
  • Mental depression, headache, convulsions (rare)
  • Ototoxicity: Rare but can include vestibular/auditory damage, partial or total deafness, dizziness, nystagmus, vertigo 2

Metabolic/Endocrine

  • Hyponatremia: Reported in clinical use 1
  • SIADH (Syndrome of Inappropriate Antidiuretic Hormone): Can occur with higher than recommended doses 2

Cardiovascular (Rare)

  • Hypertension, myocardial infarction, angina pectoris, transient ECG abnormalities
  • Raynaud's phenomenon: Particularly when combined with bleomycin and cisplatin 2

Important Clinical Considerations

Toxicity worsens with repeated dosing 1, making cumulative effects a critical monitoring concern. The side effect profile is dose-related, meaning higher doses produce more severe manifestations of these effects 2.

Contraindications: Vinblastine is contraindicated during pregnancy and lactation due to teratogenic effects 1.

Monitoring requirements: Close hematologic monitoring is essential, particularly for neutropenia during weeks 2-3 of treatment, with daily blood counts recommended to guide transfusion requirements and assess infection risk in overdose situations 2, 3, 4.

References

3
Research

Adverse events in small dogs treated with a single dose of vinblastine.

Journal of veterinary internal medicine, 2026

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.