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

Letrozole Actavis

Active Ingredient:
Letrozole
Origin:
EU

Letrozole Actavis (Letrozole)

Letrozole, the active ingredient in Letrozole Actavis, 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, where it reduces estrogen production that can stimulate tumor growth. It is indicated for both metastatic and adjuvant treatment settings.

GNH India supplies Letrozole Actavis as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, clinics and pharmacies worldwide, ensuring consistent quality, regulatory compliance and reliable logistics for global distribution.

Manufacturer / TM Owner

Actavis Group Ptc Ehf.

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Indications & Clinical Uses

  • Letrozole Actavis is an aromatase inhibitor used in the management of hormone‑dependent breast cancer.
  • Metastatic hormone receptor‑positive breast cancer in postmenopausal women: reduces estrogen levels to inhibit tumor progression.
  • Adjuvant therapy for early‑stage hormone receptor‑positive breast cancer: decreases recurrence risk after surgery.
  • Extended adjuvant therapy following 5 years of tamoxifen: provides continued estrogen suppression to lower late recurrence.

How It Works

  • Letrozole selectively binds to and inhibits the aromatase enzyme, which is responsible for converting adrenal and peripheral androgens into estrogens. By blocking this conversion, circulating estrogen concentrations fall, limiting the growth stimulus for estrogen‑dependent tumor cells and thereby slowing or halting disease progression.

Side Effects

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

Common Side Effects

  • Hot flashes: sudden feeling of warmth and sweating.
  • Arthralgia: joint pain or stiffness.
  • Fatigue: persistent tiredness not relieved by rest.
  • Nausea: mild to moderate upset stomach.
  • Headache: intermittent or persistent head pain.
  • Insomnia: difficulty falling or staying asleep.

Serious or Rare Side Effects

  • Severe bone loss or osteoporosis: increased fracture risk.
  • Thromboembolic events: deep vein thrombosis or pulmonary embolism.
  • Liver function abnormalities: elevated transaminases or hepatitis.
  • Severe allergic reactions: rash, swelling, or anaphylaxis.
  • Myocardial infarction: rare heart attack occurrence.

Precautions & Warnings

  • When prescribing Letrozole Actavis, clinicians should observe several precautionary measures to ensure patient safety.
  • Assess bone health: monitor bone mineral density and consider calcium/vitamin D supplementation.
  • Check liver function: perform baseline and periodic hepatic enzyme tests.
  • Evaluate cardiovascular risk: review history of thromboembolic events or uncontrolled hypertension.
  • Avoid use in pregnancy: contraindicated in pregnant women; ensure effective contraception.
  • Store at ambient temperature: keep in original packaging, protect from moisture and direct sunlight.

Avoid Interactions

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

Major Interactions (Avoid)

  • Estrogen replacement therapy: may counteract the estrogen‑lowering effect of letrozole.
  • Strong CYP2C19 inhibitors (e.g., fluconazole): can increase letrozole plasma concentrations.

Moderate Interactions (Monitor Closely)

  • CYP3A4 inducers (e.g., rifampin, carbamazepine): may reduce letrozole exposure.
  • Anticoagulants (e.g., warfarin): monitor INR as letrozole may affect clotting parameters.
  • Selective serotonin reuptake inhibitors (e.g., fluoxetine): observe for potential additive effects on bone health.

Frequently Asked Questions

Letrozole Actavis is prescribed for hormone receptor‑positive breast cancer in postmenopausal women. It is used in metastatic disease, as adjuvant therapy after surgery, and as extended adjuvant treatment following a course of tamoxifen to reduce the risk of cancer recurrence.

Letrozole works by inhibiting the aromatase enzyme, which converts androgens into estrogens in peripheral tissues. By blocking this conversion, estrogen levels fall, depriving estrogen‑dependent tumor cells of a growth stimulus and thereby slowing disease progression.

The dose of Letrozole Actavis is determined by the prescribing physician based on the patient’s clinical condition, disease stage and treatment guidelines. Typical dosing ranges are described in professional references, but the exact regimen must be individualized by a qualified healthcare professional.

Letrozole is contraindicated in pregnancy because it can interfere with fetal development by lowering estrogen levels. It is also not recommended for breastfeeding mothers, as it may pass into breast milk and affect the infant. Effective contraception is required for women of child‑bearing potential.

To order Letrozole Actavis, submit an enquiry on the product page at gnhindia.com with the required quantity. GNH India supplies hospitals, oncology centres, pharmacies and procurement teams worldwide. After submission, the sales team will verify trade or institutional credentials, then provide pricing, availability, shipping details and any necessary import documentation.

Letrozole, anastrozole and exemestane belong to the same class of aromatase inhibitors. Letrozole is often considered the most potent inhibitor of estrogen synthesis, which can translate into slightly higher efficacy in some trials, but individual response varies. Safety profiles are similar, with bone loss and hot flashes being common across the class.

Letrozole Actavis tablets should be stored at ambient temperature, below 25 °C, in the original blister pack or container. Protect the product from moisture, excessive heat and direct sunlight. Do not refrigerate or freeze the tablets, and keep them out of reach of children.

Letrozole Actavis 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 physician and should not alter the dose or frequency without medical advice.

Serious risks of Letrozole include significant bone loss leading to osteoporosis or fractures, increased risk of thromboembolic events such as deep‑vein thrombosis, and rare but severe liver function abnormalities. Patients should be monitored regularly for bone density, cardiovascular health and hepatic enzymes.

Letrozole should not be used by pregnant women, nursing mothers, or individuals with known hypersensitivity to letrozole or any excipients. Caution is also advised for patients with severe liver impairment, uncontrolled cardiovascular disease, or a history of thromboembolic disorders, as the drug may exacerbate these conditions.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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