Product image of Ibrance (Palbociclib) supplied by GNH India

Ibrance

Active Ingredient:
Palbociclib
Origin:
EU

Ibrance (Palbociclib)

Palbociclib, the active ingredient in Ibrance, is a CDK4/6 inhibitor presented as a tablet for oral use. It selectively blocks cyclin‑dependent kinases 4 and 6, halting cell‑cycle progression in cancer cells. The drug is indicated for hormone receptor‑positive, HER2‑negative advanced or metastatic breast cancer in adult patients, improving progression‑free survival when combined with endocrine therapy.

GNH India supplies Ibrance as a licensed, GDP‑compliant international pharmaceutical supplier serving oncology centres, hospitals and pharmacies worldwide.

Manufacturer / TM Owner

Pfizer Europe Ma Eeig

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Indications & Clinical Uses

Ibrance is used in the treatment of hormone receptor‑positive, HER2‑negative breast cancer, targeting cell‑cycle pathways.

  • Advanced breast cancer: improves progression‑free survival when combined with endocrine therapy.
  • Metastatic breast cancer: delays disease progression in patients with HR‑positive, HER2‑negative tumors.
  • Postmenopausal women with HR‑positive, HER2‑negative disease: enhances response to letrozole or fulvestrant.

How It Works

  • Palbociclib selectively inhibits cyclin‑dependent kinases 4 and 6, key regulators of the transition from the G1 to S phase of the cell cycle. By blocking these kinases, the drug prevents phosphorylation of the retinoblastoma protein, thereby arresting proliferation of cancer cells that depend on this pathway.

Side Effects

Palbociclib may cause a range of adverse reactions, which are categorized by frequency and severity.

Common Side Effects

  • Neutropenia: reduced neutrophil count.
  • Leukopenia: decreased white blood cells.
  • Anemia: fatigue due to low red cells.
  • Nausea: upset stomach.
  • Fatigue: general tiredness.

Serious or Rare Side Effects

  • Febrile neutropenia: fever with low neutrophils.
  • Pulmonary embolism: blood clot in lungs.
  • Severe liver enzyme elevation: increased ALT/AST.

Precautions & Warnings

When prescribing Palbociclib, several safety considerations should be observed.

  • Monitor blood counts: perform regular CBC to detect neutropenia.
  • Assess liver function: check ALT/AST before and during therapy.
  • Avoid use in pregnancy: drug is contraindicated; ensure effective contraception.
  • Adjust dose in renal impairment: consider dose reduction for moderate renal dysfunction.
  • Review concomitant myelosuppressive agents: avoid combining with other drugs that lower blood cells.
  • Store at ambient temperature: keep tablets in original container, protect from moisture.

Avoid Interactions

Palbociclib interacts with several medicines that can alter its effectiveness or safety.

Major Interactions (Avoid)

  • Strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin): increase palbociclib exposure.
  • Strong CYP3A4 inducers (e.g., rifampin, carbamazepine): reduce drug levels.
  • Concurrent myelosuppressive chemotherapy: heighten risk of severe neutropenia.

Moderate Interactions (Monitor Closely)

  • Moderate CYP3A4 inhibitors (e.g., fluconazole, diltiazem): may modestly increase exposure.
  • Moderate CYP3A4 inducers (e.g., phenytoin, St. John’s wort): may modestly decrease exposure.
  • Antacids containing aluminum or magnesium: may affect absorption if taken simultaneously.

Frequently Asked Questions

Ibrance (palbociclib) is a prescription oral tablet indicated for treatment of hormone receptor‑positive, HER2‑negative advanced or metastatic breast cancer in adult patients, typically in combination with endocrine therapy such as letrozole or fulvestrant.

Palbociclib selectively inhibits cyclin‑dependent kinases 4 and 6, which are essential for progression from the G1 to S phase of the cell cycle. By blocking these kinases, the drug halts proliferation of cancer cells that rely on this pathway, thereby slowing tumor growth.

The prescribed dose of Ibrance is determined by the treating physician based on the patient’s clinical condition, concomitant medications, and laboratory values. Dosage adjustments may be required for blood‑count changes or organ impairment, and the prescriber provides the specific regimen.

Palbociclib is classified as pregnancy category D, indicating evidence of risk to the fetus. It should not be used during pregnancy, and effective contraception is required for women of child‑bearing potential. Safety during breastfeeding has not been established, and nursing mothers should avoid the drug.

To request Ibrance, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details, and any necessary import documentation.

Ibrance (palbociclib) is one of several CDK4/6 inhibitors, alongside ribociclib and abemaciclib. All target the same kinases, but they differ in dosing schedules, side‑effect profiles, and specific approvals. Choice of therapy depends on physician assessment of efficacy, tolerability, and patient characteristics.

Ibrance tablets should be stored at ambient temperature, below 25 °C, in the original packaging to protect them from moisture and light. Keep the medication out of reach of children and do not store in the bathroom or other humid environments.

Ibrance is taken orally, usually once daily, with or without food, as directed by the prescribing clinician. The tablet is swallowed whole with a glass of water, and the dosing cycle typically follows a 21‑day on‑treatment period followed by a 7‑day break, although the exact schedule is set by the physician.

The most serious risks include severe neutropenia, febrile neutropenia, and life‑threatening infections. Patients should be monitored regularly for blood‑cell counts, and any signs of fever, infection, or unusual bleeding should prompt immediate medical evaluation.

Ibrance is contraindicated in pregnant women and should not be used in patients with known hypersensitivity to palbociclib or any tablet components. Caution is also advised for individuals with severe liver impairment, uncontrolled infections, or those receiving strong CYP3A4 inducers that could reduce drug efficacy.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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