Product image of Letrozol Genericon (Letrozole) supplied by GNH India

Letrozol Genericon

Active Ingredient:
Letrozole
Origin:
EU

Letrozol Genericon (Letrozole)

Letrozole, the active ingredient in Letrozol Genericon, is an aromatase inhibitor presented as an oral tablet for oral use. It is employed to treat hormone receptor‑positive breast cancer in postmenopausal women, reducing estrogen‑driven tumor growth. The product is approved for prescription use across European markets and is distributed to hospitals, pharmacies, and specialized cancer treatment centers.

GNH India supplies Letrozol Genericon as a licensed, GDP‑compliant international pharmaceutical supplier serving oncology centres worldwide. All batches are manufactured under EU GMP standards and undergo rigorous quality testing before release.

Manufacturer / TM Owner

Genericon Pharma Gesellschaft M.B.H.

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Indications & Clinical Uses

  • Letrozole acts on estrogen‑dependent breast cancer pathways, providing therapeutic benefit in several clinical settings.
  • Hormone receptor‑positive breast cancer (postmenopausal): reduces tumor progression by lowering systemic estrogen levels.
  • Adjuvant therapy for early‑stage breast cancer (postmenopausal): decreases risk of disease recurrence after surgery.
  • Metastatic breast cancer (postmenopausal): helps control disease spread and prolongs progression‑free survival.

How It Works

  • Letrozole selectively inhibits the aromatase enzyme (CYP19A1), which converts adrenal and peripheral androgen precursors into estrone and estradiol. By binding to the enzyme’s active site, it blocks estrogen‑biosynthesis, leading to a marked reduction in circulating estrogen concentrations. The resulting hypo‑estrogenic state deprives estrogen‑dependent tumor cells of a growth stimulus, thereby slowing or halting cancer cell proliferation. This effect is dose‑dependent and reversible upon discontinuation.

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, often with sweating.
  • Joint and muscle pain: aching in muscles, joints, or back.
  • Fatigue: persistent tiredness not relieved by rest.
  • Nausea: mild to moderate upset stomach.
  • Headache: pressure or throbbing pain.
  • Sweating: increased perspiration, especially at night.

Serious or Rare Side Effects

  • Severe liver injury: jaundice, dark urine, elevated liver enzymes.
  • Bone fractures (osteoporosis): increased risk of fractures, especially hip and spine.
  • Pulmonary embolism: sudden shortness of breath, chest pain, rapid heart rate.
  • Allergic reactions (anaphylaxis): rash, swelling, difficulty breathing.
  • Elevated cholesterol levels: may require monitoring.
  • QT interval prolongation: potential cardiac rhythm disturbances.

Precautions & Warnings

  • When prescribing Letrozol Genericon, clinicians should consider several safety measures.
  • Pregnancy: contraindicated (Category X); avoid use in pregnant women.
  • Breastfeeding: not recommended; letrozole is excreted in milk.
  • Bone health: monitor bone mineral density; consider calcium/vitamin D supplementation.
  • Liver function: assess hepatic enzymes before initiating therapy.
  • Drug interactions: review concomitant medications for potential CYP interactions.
  • Store at ambient temperature: keep below 25 °C, protect from moisture and light.

Avoid Interactions

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

Major Interactions (Avoid)

  • Estrogen‑containing hormone therapy: antagonizes letrozole’s effect, reducing efficacy.
  • Tamoxifen: competitive estrogen receptor modulation may diminish therapeutic benefit.
  • Strong CYP3A4 inducers (e.g., rifampin, carbamazepine): may markedly lower plasma concentrations.

Moderate Interactions (Monitor Closely)

  • Warfarin: letrozole may enhance anticoagulant effect; monitor INR.
  • Selective serotonin reuptake inhibitors (e.g., fluoxetine): may increase plasma levels; observe for toxicity.
  • Cholesterol‑lowering agents (statins): potential for altered metabolism; check lipid profile.

Frequently Asked Questions

Letrozol Genericon contains letrozole, an aromatase inhibitor that is used to treat hormone receptor‑positive breast cancer in postmenopausal patients. By lowering estrogen levels, it helps slow tumor growth and is employed in adjuvant, neoadjuvant, and metastatic settings.

Letrozole blocks the aromatase enzyme (CYP19A1), which converts androgens into estrogens. Inhibition of this pathway reduces circulating estradiol and estrone, creating a hypo‑estrogenic environment that deprives estrogen‑dependent cancer cells of a key growth signal.

The dose of letrozole is determined by the prescribing clinician based on the patient’s condition, renal and hepatic function, and treatment protocol. The product is supplied as a prescription‑only oral formulation, and dosing should follow the prescriber’s instructions.

Letrozol Genericon is classified as pregnancy Category X, meaning it is contraindicated in pregnancy because it can cause fetal harm. It is also not recommended during breastfeeding, as letrozole can be excreted in breast milk and may affect the infant.

To order, submit an enquiry on the Letrozol Genericon 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 is a third‑generation aromatase inhibitor with a long half‑life and high potency, often preferred for its once‑daily dosing and strong estrogen suppression. Compared with anastrozole or exemestane, letrozole may achieve slightly greater estrogen reduction, but the choice depends on individual patient factors and clinician judgment.

Letrozol Genericon should be stored at ambient temperature, preferably below 25 °C (77 °F). Keep the tablets in the original container, protect them from moisture, excessive heat, and direct light to maintain stability throughout the shelf life.

The medication is taken orally, usually as a whole tablet with water. It is generally prescribed to be taken once daily, at the same time each day, and can be taken with or without food unless the prescriber advises otherwise.

Serious risks include severe liver injury, osteoporosis‑related fractures, pulmonary embolism, and rare allergic reactions such as anaphylaxis. Patients should be monitored for signs of liver dysfunction, bone density loss, and any sudden respiratory or cardiovascular symptoms.

Letrozol Genericon should not be used by pregnant or breastfeeding women, patients with known hypersensitivity to letrozole, or individuals with severe hepatic impairment without close monitoring. It is also contraindicated in patients receiving estrogen‑containing hormone therapy.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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