Product image of Letrozole Sandoz (Letrozole) supplied by GNH India

Letrozole Sandoz

Active Ingredient:
Letrozole
Origin:
EU

Letrozole Sandoz (Letrozole)

Letrozole, the active ingredient in Letrozole Sandoz, is an aromatase inhibitor presented as an oral tablet for oral use. Approved in the European Union, it lowers estrogen synthesis and is employed to treat hormone receptor‑positive breast cancer in postmenopausal women.

GNH India supplies Letrozole Sandoz as a licensed, GDP‑compliant international pharmaceutical supplier serving oncology centres, hospitals and pharmacies worldwide. The company provides the product under strict quality standards to meet global oncology treatment needs.

Manufacturer / TM Owner

Sandoz

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Indications & Clinical Uses

Letrozole is used in the management of estrogen‑dependent breast cancer, acting on postmenopausal disease pathways.

  • Metastatic breast cancer: slows disease progression in postmenopausal women with hormone‑receptor positive tumors.
  • Adjuvant therapy for early‑stage breast cancer: reduces risk of recurrence after surgery in postmenopausal patients.
  • Neoadjuvant treatment: shrinks tumor size before surgery in eligible postmenopausal women.

How It Works

  • Letrozole selectively and non‑competitively inhibits the aromatase enzyme, which converts androstenedione and testosterone into estrone and estradiol. By blocking this peripheral estrogen synthesis, circulating estrogen levels fall markedly, depriving estrogen‑dependent breast cancer cells of a growth stimulus. The inhibition is reversible and does not affect steroidogenesis upstream of aromatase.

Side Effects

Letrozole may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

  • Hot flashes
  • Joint and muscle pain
  • Fatigue
  • Nausea
  • Headache
  • Elevated cholesterol levels

Serious or Rare Side Effects

  • Severe bone loss or osteoporosis
  • Significant liver enzyme elevation
  • Thromboembolic events (deep vein thrombosis, pulmonary embolism)
  • Cardiovascular complications (myocardial infarction, stroke)
  • Severe allergic reactions (anaphylaxis, skin rash)
  • Interstitial lung disease or pneumonitis

Precautions & Warnings

Before initiating Letrozole, consider the following precautions to ensure safe use.

  • Pregnancy: contraindicated in pregnancy; drug is teratogenic (Category X).
  • Breastfeeding: not recommended; may be excreted in breast milk.
  • Bone health: monitor bone mineral density; consider calcium and vitamin D supplementation.
  • Cardiovascular risk: assess baseline cardiovascular status, especially in patients with hypertension or hyperlipidemia.
  • Liver function: evaluate hepatic function; dose adjustment may be needed in severe impairment.
  • Store at ambient temperature: keep below 25 °C, protect from moisture and light in the original container.

Avoid Interactions

Letrozole can interact with other medicines, altering its efficacy or safety.

Major Interactions (Avoid)

  • Strong CYP3A4 inducers (e.g., rifampin, phenytoin) may reduce Letrozole exposure.
  • Strong CYP2C19 inhibitors (e.g., fluconazole) may increase Letrozole levels.
  • Estrogen replacement therapy antagonizes Letrozole's effect.
  • Tamoxifen may diminish Letrozole efficacy when used concurrently.
  • Warfarin may have increased anticoagulant effect.

Moderate Interactions (Monitor Closely)

  • SSRIs (e.g., fluoxetine) may affect Letrozole metabolism.
  • Statins (e.g., simvastatin) may increase risk of myopathy.
  • Bisphosphonates used for bone health may require monitoring.
  • NSAIDs may increase risk of gastrointestinal upset.
  • Thyroid hormone replacement may need dose adjustment.

Frequently Asked Questions

Letrozole Sandoz is indicated for the treatment of hormone‑receptor positive breast cancer in postmenopausal women. It is used in metastatic disease, as adjuvant therapy after surgery to lower recurrence risk, and in the neoadjuvant setting to reduce tumor size before operative intervention.

Letrozole works by selectively inhibiting the aromatase enzyme, which converts adrenal and ovarian androgens into estrogens. By blocking this conversion, circulating estrogen levels drop, depriving estrogen‑dependent breast cancer cells of a key growth signal and thereby slowing tumor progression.

The specific dose of Letrozole is determined by the prescribing clinician based on the individual patient's condition, treatment stage, and overall health. Physicians typically start with the standard recommended dose, but adjustments may be made according to therapeutic response and tolerability.

Letrozole is classified as Pregnancy Category X, meaning it is contraindicated during pregnancy because it can cause fetal harm. It is also not recommended for breastfeeding mothers, as the drug may be excreted in breast milk and could affect the infant.

To order Letrozole Sandoz, submit an enquiry on the product page at gnhindia.com with the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, and will request verification of trade or institutional credentials before providing pricing, availability, shipping details and any necessary import documentation.

Letrozole, anastrozole and exemestane are the three main aromatase inhibitors used in postmenopausal breast cancer. Letrozole is a non‑steroidal inhibitor with a slightly longer half‑life, offering potent estrogen suppression. Clinical studies suggest comparable efficacy among the three, with individual side‑effect profiles influencing physician choice.

Letrozole tablets should be stored at ambient temperature, preferably below 25 °C. Keep the medication in its original packaging, protect it from moisture and direct light, and store it out of reach of children.

Letrozole is taken orally, usually once daily, with or without food. The tablet should be swallowed whole with a glass of water. Patients should follow the dosing schedule prescribed by their healthcare provider and not alter the frequency without medical advice.

The most serious risks of Letrozole include severe bone loss leading to osteoporosis or fractures, cardiovascular events such as myocardial infarction or stroke, significant liver enzyme elevations, and rare but serious pulmonary complications like interstitial lung disease.

Letrozole should not be used by pregnant or breastfeeding women, premenopausal patients, individuals with severe hepatic impairment, or patients with a known hypersensitivity to letrozole or any component of the formulation. Clinicians should also exercise caution in patients with existing osteoporosis or high cardiovascular risk.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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