Product image of Letropuren (Letrozole) supplied by GNH India

Letropuren

Active Ingredient:
Letrozole
Origin:
EU

Letropuren (Letrozole)

Letrozole, the active ingredient in Letropuren, is an aromatase inhibitor presented as an oral tablet for oral use. It is employed in the treatment of hormone‑receptor‑positive breast cancer in postmenopausal women, both as primary therapy and as adjuvant treatment following surgery.

GNH India supplies Letropuren as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide, adhering to EU quality standards and providing reliable sourcing for endocrine therapy agents. The company maintains rigorous batch testing, secure packaging, and traceability to ensure product integrity throughout the supply chain.

Manufacturer / TM Owner

Eugia Pharma (Malta) Ltd

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Indications & Clinical Uses

Letrozole, an aromatase inhibitor, is used in breast cancer management targeting estrogen‑dependent tumor growth.

  • Hormone receptor‑positive breast cancer (postmenopausal): reduces tumor recurrence and disease progression.
  • Adjuvant therapy for early‑stage breast cancer: improves disease‑free survival after surgery.
  • Metastatic breast cancer (postmenopausal): provides disease control and prolongs survival.

How It Works

  • Letrozole reversibly binds to the aromatase enzyme, inhibiting its activity and thereby blocking the conversion of androgens to estrogens. This reduction in systemic estrogen levels limits the growth stimulus for estrogen‑dependent breast cancer cells, leading to tumor growth arrest and potential regression in postmenopausal patients.

Side Effects

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

Common Side Effects

  • Hot flashes: sudden feeling of warmth and sweating.
  • Joint and muscle pain: aching in joints or muscles.
  • Fatigue: persistent tiredness not relieved by rest.
  • Nausea: feeling of sickness with or without vomiting.

Serious or Rare Side Effects

  • Deep vein thrombosis or pulmonary embolism: blood clots in veins or lungs.
  • Severe liver injury: marked elevation of liver enzymes or hepatitis.
  • Bone fracture: increased risk of osteoporosis‑related fractures.
  • Myocardial infarction: heart attack due to reduced blood flow.
  • Anaphylaxis: severe allergic reaction with breathing difficulty.

Precautions & Warnings

Before initiating Letrozole therapy, several safety considerations should be addressed.

  • Monitor bone density: assess risk of osteoporosis and consider supplementation.
  • Assess liver function: perform baseline hepatic enzyme tests.
  • Contraindicated in pregnancy: avoid use in pregnant women (Category X).
  • Evaluate cardiovascular risk: review history of thromboembolic events.
  • Store at ambient temperature below 25°C: keep in the original pack, protect from moisture.

Avoid Interactions

Letrozole can interact with other medicines, requiring attention to avoid reduced efficacy or increased toxicity.

Major Interactions (Avoid)

  • Tamoxifen: concurrent use may diminish tamoxifen's therapeutic effect.
  • Strong CYP3A4 inducers (e.g., rifampin): can lower letrozole plasma concentrations.
  • Live estrogen therapy: antagonistic action may reduce intended outcomes.

Moderate Interactions (Monitor Closely)

  • Anticoagulants (e.g., warfarin): may increase bleeding tendency; monitor INR.
  • CYP2C19 inhibitors (e.g., fluconazole): may raise letrozole exposure; adjust monitoring.

Frequently Asked Questions

Letropuren contains letrozole, an aromatase inhibitor indicated for the treatment of hormone‑receptor‑positive breast cancer in postmenopausal women, including both early‑stage disease as adjuvant therapy and metastatic disease to control tumor growth.

Letrozole blocks the aromatase enzyme, preventing the conversion of androgens into estrogen. By lowering circulating estrogen levels, it deprives estrogen‑dependent breast cancer cells of a growth stimulus, thereby inhibiting tumor proliferation.

The prescribed dose of Letropuren is determined by the treating physician based on the patient’s clinical condition, renal and hepatic function, and treatment goals. Patients should follow the dosing instructions provided by their healthcare professional.

Letropuren is classified as pregnancy category X, meaning it is contraindicated in pregnancy due to potential fetal harm. It is also not recommended while breastfeeding because it may pass into breast milk and affect the infant.

To request Letropuren, 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.

Letrozole, the active component of Letropuren, is a non‑steroidal aromatase inhibitor, offering a more complete estrogen suppression compared with selective estrogen receptor modulators such as tamoxifen. It is often preferred for postmenopausal patients when maximal estrogen reduction is desired.

Letropuren should be stored at ambient temperature below 25 °C, in its original packaging, and protected from moisture and direct sunlight to maintain stability and potency throughout its shelf life.

Letropuren is taken orally, usually as a tablet swallowed with water. The exact timing and whether it should be taken with food are determined by the prescribing clinician.

Serious risks include deep vein thrombosis or pulmonary embolism, severe liver injury, bone fractures due to decreased estrogen, myocardial infarction, and rare anaphylactic reactions. Patients should be monitored regularly for signs of these events.

Letropuren should not be used by pregnant women, individuals with known hypersensitivity to letrozole, or patients with uncontrolled severe liver disease. Caution is also advised for those with a history of thromboembolic disorders or significant cardiovascular disease.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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