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 administration. By blocking the conversion of androgens to estrogen, it lowers circulating estrogen levels and is employed in the treatment of hormone‑responsive breast cancer in post‑menopausal patients.

GNH India supplies Letrozole Sandoz as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide, providing reliable access to quality‑assured medication for cancer care and supporting treatment programs across diverse regulatory environments.

Manufacturer / TM Owner

Sandoz A/S

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Indications & Clinical Uses

Letrozole is an aromatase inhibitor used in hormone‑dependent breast cancer management.

  • Early‑stage estrogen receptor‑positive breast cancer: reduces risk of recurrence after surgery.
  • Advanced or metastatic breast cancer: slows disease progression in post‑menopausal women.
  • Adjuvant therapy for hormone‑responsive breast cancer: improves disease‑free survival when combined with other agents.

How It Works

  • Letrozole selectively binds to the aromatase enzyme (CYP19A1) in peripheral tissues, inhibiting the conversion of androstenedione and testosterone to estrone and estradiol. This blockade markedly lowers systemic estrogen concentrations, depriving estrogen‑dependent tumor cells of growth stimulus and thereby limiting proliferation of hormone‑sensitive breast cancer.

Side Effects

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

Common Side Effects

  • Hot flashes
  • Joint and muscle pain
  • Fatigue
  • Nausea
  • Headache
  • Dizziness

Serious or Rare Side Effects

  • Severe bone loss or osteoporosis leading to fractures
  • Thromboembolic events such as deep‑vein thrombosis
  • Significant liver enzyme elevations or hepatitis
  • Severe allergic reactions including anaphylaxis
  • Cardiovascular events like myocardial infarction
  • Interstitial lung disease or pneumonitis

Precautions & Warnings

When prescribing Letrozole, clinicians should consider several safety measures.

  • Bone health monitoring: assess bone mineral density periodically due to risk of osteoporosis.
  • Cardiovascular assessment: evaluate patient history for thromboembolic or cardiac disease.
  • Liver function testing: monitor hepatic enzymes before and during therapy.
  • Pregnancy avoidance: contraindicated in pregnancy; ensure effective contraception.
  • Store at ambient temperature: keep tablets in the original container, protect from moisture and direct sunlight.

Avoid Interactions

Letrozole can interact with other medicines, requiring careful management.

Major Interactions (Avoid)

  • Estrogen replacement therapy: antagonizes Letrozole’s estrogen‑lowering effect.
  • Strong CYP3A4 inducers (e.g., rifampin, phenytoin): may markedly reduce Letrozole plasma levels.
  • Tamoxifen: concurrent use may diminish therapeutic benefit.

Moderate Interactions (Monitor Closely)

  • CYP2C9 substrates (e.g., warfarin): Letrozole may alter anticoagulant control.
  • Statins metabolized by CYP3A4: monitor for increased statin exposure.
  • Other hormonal agents (e.g., GnRH analogues): assess combined endocrine effects.

Frequently Asked Questions

Letrozole Sandoz is indicated for the treatment of hormone‑responsive breast cancer in post‑menopausal women. It is used as adjuvant therapy after surgery, in advanced or metastatic disease, and to reduce the risk of recurrence by lowering estrogen levels that fuel tumor growth.

Letrozole works by selectively inhibiting the aromatase enzyme (CYP19A1), which converts androgens into estrogens. By blocking this conversion, systemic estrogen concentrations fall, depriving estrogen‑dependent breast cancer cells of a key growth signal and thereby slowing tumor proliferation.

The dosage of Letrozole is individualized by the prescribing clinician based on the patient’s condition, renal and hepatic function, and treatment goals. The prescriber determines the appropriate strength and regimen; patients should follow the exact instructions provided on the prescription label.

Letrozole is contraindicated during pregnancy because it can harm the developing fetus. Its safety in breastfeeding has not been established, and it is generally advised that nursing mothers avoid the medication. Effective contraception is required for women of child‑bearing potential while on therapy.

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

Letrozole belongs to the aromatase inhibitor class, similar to anastrozole and exemestane. Compared with anastrozole, Letrozole has a slightly longer half‑life and may achieve more consistent estrogen suppression, which can translate into comparable efficacy but a different side‑effect profile, especially regarding bone health.

Letrozole tablets should be stored at ambient temperature, below 25 °C, in the original packaging to protect them from moisture and light. Keep the container tightly closed and out of reach of children. No refrigeration is required for this oral formulation.

Letrozole is taken orally, usually once daily, with a glass of water. It can be taken with or without food, but patients should follow any specific instructions from their healthcare provider and avoid crushing or chewing the tablet unless directed otherwise.

Serious risks associated with Letrozole include severe bone loss leading to fractures, thromboembolic events such as deep‑vein thrombosis, significant liver enzyme elevations, cardiovascular complications, and rare but severe allergic reactions like anaphylaxis. Patients should report any unusual symptoms promptly.

Letrozole should not be used by women who are pregnant, planning to become pregnant, or breastfeeding. It is also contraindicated in patients with known hypersensitivity to Letrozole or any component of the formulation, and caution is advised in those with severe liver disease or uncontrolled cardiovascular conditions.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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