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

Letrozol Amarox

Active Ingredient:
Letrozole
Origin:
EU

Letrozol Amarox (Letrozole)

Letrozole, the active ingredient in Letrozol Amarox, is an aromatase inhibitor presented as an oral tablet for systemic administration. It works by lowering estrogen levels and is used primarily to treat hormone receptor‑positive breast cancer in postmenopausal women, both in the adjuvant and metastatic settings, and may be prescribed as part of a comprehensive endocrine therapy regimen.

GNH India supplies Letrozol Amarox as a licensed, GDP‑compliant international pharmaceutical supplier serving oncology centres worldwide. The company adheres to stringent quality standards and provides reliable logistics for bulk and individual orders.

Manufacturer / TM Owner

Amarox Pharma B.V.

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Indications & Clinical Uses

  • Letrozole is employed in the management of estrogen‑dependent breast cancer, targeting hormone‑driven disease pathways.
  • Hormone receptor‑positive breast cancer (adjuvant): reduces risk of disease recurrence after surgery in postmenopausal women.
  • Metastatic hormone receptor‑positive breast cancer: slows tumor progression and extends survival in postmenopausal patients with advanced disease.
  • Neoadjuvant therapy for estrogen‑responsive tumors: decreases tumor size before surgery, facilitating breast‑conserving procedures.

How It Works

  • Letrozole reversibly binds to the aromatase enzyme (CYP19A1) in peripheral tissues such as adipose and breast tissue, inhibiting the conversion of androstenedione and testosterone into estrone and estradiol. This blockade markedly lowers circulating estrogen levels, creating a hypo‑estrogenic environment that limits estrogen‑driven proliferation of breast cancer cells in postmenopausal patients.

Side Effects

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

Common Side Effects

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

Serious or Rare Side Effects

  • Osteoporosis or bone fractures
  • Severe liver injury
  • Pulmonary embolism or deep‑vein thrombosis

Precautions & Warnings

When prescribing Letrozole, clinicians should consider several precautionary measures to ensure safe use.

  • Cardiovascular assessment: evaluate history of heart disease before initiating therapy.
  • Bone health monitoring: perform baseline bone mineral density testing and consider calcium/vitamin D supplementation.
  • Liver function evaluation: check hepatic enzymes prior to treatment and periodically during therapy.
  • Drug interactions: review concomitant medications that may affect estrogen metabolism.
  • Store at ambient temperature: keep tablets below 25 °C in the original container, protected from moisture and light.

Avoid Interactions

Letrozole can interact with other medicines, requiring careful review of a patient’s medication list.

Major Interactions (Avoid)

  • Strong CYP3A4 inducers (e.g., rifampin, carbamazepine): may markedly reduce letrozole exposure.
  • Tamoxifen: combined use may antagonize therapeutic effect.

Moderate Interactions (Monitor Closely)

  • Selective serotonin reuptake inhibitors (e.g., fluoxetine): may increase plasma levels modestly.
  • Warfarin: may enhance anticoagulant effect; monitor INR.
  • Antacids containing aluminum or magnesium: may affect absorption; separate dosing by at least 2 hours.

Frequently Asked Questions

Letrozol Amarox contains letrozole, an aromatase inhibitor indicated for the treatment of hormone receptor‑positive breast cancer in postmenopausal women. It is used in adjuvant, neoadjuvant, and metastatic settings to reduce estrogen‑driven tumor growth.

Letrozole blocks the aromatase enzyme (CYP19A1), preventing the conversion of androgens into estrogens. By lowering systemic estrogen levels, it deprives estrogen‑dependent breast cancer cells of a key growth signal, thereby inhibiting tumor proliferation.

The appropriate dose of Letrozol Amarox is determined by the prescribing clinician based on the patient’s clinical condition, treatment intent, and any relevant laboratory values. Specific dosing regimens are not disclosed here and should follow the prescriber’s instructions.

Letrozol Amarox 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 it may be excreted in milk and affect the infant.

To order Letrozol Amarox, 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.

Letrozol Amarox (letrozole) is a third‑generation aromatase inhibitor with a high potency and a relatively long half‑life, offering once‑daily dosing. Compared with anastrozole or exemestane, letrozole often provides greater estrogen suppression, which may translate into slightly higher efficacy in certain patient populations, though safety profiles are broadly similar.

Letrozol Amarox tablets should be stored at ambient temperature, preferably below 25 °C, in the original blister pack or container. Keep them away from moisture, direct sunlight, and excessive heat to maintain product stability.

Letrozol Amarox is taken orally, usually with a glass of water. It is generally administered once daily, and patients should follow the timing and any food‑related instructions provided by their healthcare professional.

The most serious adverse events linked to Letrozol Amarox include osteoporosis or bone fractures due to prolonged estrogen depletion, severe liver injury, and thromboembolic events such as pulmonary embolism or deep‑vein thrombosis. Patients should be monitored regularly for these conditions.

Letrozol Amarox should not be used by premenopausal women, pregnant or breastfeeding individuals, patients with severe hepatic impairment, or those with known hypersensitivity to letrozole or any excipients. Caution is also advised in patients with a history of cardiovascular disease or bone disorders.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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