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

Letrozole Bluefish

Active Ingredient:
Letrozole
Origin:
EU

Letrozole Bluefish (Letrozole)

Letrozole, the active ingredient in Letrozole Bluefish, is a aromatase inhibitor presented as an oral tablet for oral use. It is employed to treat hormone receptor‑positive breast cancer in postmenopausal women by lowering estrogen levels.

GNH India supplies Letrozole Bluefish as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Bluefish Pharmaceuticals Ab

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Indications & Clinical Uses

Letrozole is an aromatase inhibitor used in the management of estrogen‑dependent breast cancer. It works by suppressing estrogen production, which is essential for tumor growth.

  • Hormone receptor‑positive breast cancer (postmenopausal): Reduces estrogen to inhibit tumor progression.
  • Adjuvant therapy for early‑stage disease: Decreases risk of recurrence after surgery.
  • Metastatic breast cancer (postmenopausal): Controls disease spread by maintaining low estrogen levels.

How It Works

  • Letrozole selectively inhibits the aromatase enzyme (CYP19A1), blocking the peripheral conversion of androgens to estrogens. This reduction in circulating estrogen diminishes estrogen‑driven proliferation of hormone‑sensitive breast cancer cells, thereby slowing tumor growth and progression.

Side Effects

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

Common Side Effects

  • Hot flashes: Sudden feeling of warmth and sweating.
  • Joint and muscle pain: Arthralgia or myalgia.
  • Fatigue: Persistent tiredness.
  • Nausea: Mild to moderate upset stomach.
  • Headache: Tension‑type or migraine‑like.
  • Dizziness: Light‑headed sensations.

Serious or Rare Side Effects

  • Severe liver injury: Jaundice or elevated liver enzymes.
  • Bone fractures: Increased risk of osteoporosis‑related breaks.
  • Pulmonary embolism: Sudden shortness of breath or chest pain.
  • Allergic reactions: Rash, swelling, or anaphylaxis.
  • QT interval prolongation: Potential cardiac arrhythmias.
  • Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.

Precautions & Warnings

Before initiating letrozole therapy, several safety considerations should be reviewed.

  • Pregnancy: Contraindicated (Category X); teratogenic risk.
  • Breastfeeding: Not recommended; drug may pass into milk.
  • Bone health: Monitor bone mineral density; consider calcium/vitamin D supplementation.
  • Liver function: Assess hepatic status; adjust if significant impairment.
  • Drug interactions: Review concomitant medications for potential interactions.
  • Store at ambient temperature: Keep below 25°C in original packaging, protect from moisture and light.

Avoid Interactions

Letrozole can interact with several medicines, requiring careful management.

Major Interactions (Avoid)

  • Tamoxifen: Antagonistic effect reduces therapeutic benefit.
  • Estrogen replacement therapy: Counteracts letrozole’s action.
  • Strong CYP2A6 inhibitors (e.g., ketoconazole): May increase letrozole plasma levels.

Moderate Interactions (Monitor Closely)

  • Warfarin: Potential increase in INR; monitor coagulation.
  • CYP2C19 substrates (e.g., omeprazole): May alter metabolism; observe clinical response.
  • Diuretics: May affect electrolyte balance; watch for dehydration.
  • Selective serotonin reuptake inhibitors: Possible additive fatigue.
  • Anticonvulsants (e.g., carbamazepine): May reduce letrozole exposure; consider dose adjustment.

Frequently Asked Questions

Letrozole Bluefish is used to treat hormone receptor‑positive breast cancer in postmenopausal women. By lowering estrogen levels, it helps slow tumor growth and can be employed in adjuvant, neoadjuvant, or metastatic settings as determined by the treating oncologist.

Letrozole works by selectively inhibiting the aromatase enzyme, which converts androgens into estrogens in peripheral tissues. This inhibition leads to a marked reduction in circulating estrogen, depriving estrogen‑dependent cancer cells of a key growth stimulus.

The dosage of letrozole is individualized by the prescribing physician based on the patient’s clinical condition, renal and hepatic function, and treatment goals. The prescriber determines the appropriate strength, frequency, and duration of therapy.

Letrozole is classified as Pregnancy Category X, meaning it is contraindicated during pregnancy due to known teratogenic risk. It is also not recommended for breastfeeding mothers because the drug can be excreted in breast milk and may affect the infant.

To order Letrozole Bluefish, 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 is a third‑generation aromatase inhibitor with a high potency and a long half‑life, offering consistent estrogen suppression. Compared with anastrozole or exemestane, letrozole often provides slightly greater estrogen reduction, but individual response and side‑effect profiles guide the choice of therapy.

Store Letrozole Bluefish at ambient temperature, preferably below 25 °C. Keep the tablets in the original container, protect them from moisture, heat, and direct sunlight. Do not use if the packaging is damaged or the tablets appear discoloured.

Letrozole Bluefish 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 healthcare provider and not alter the regimen without medical advice.

Serious risks include severe liver injury, bone fractures due to decreased bone mineral density, pulmonary embolism, and rare but life‑threatening skin reactions such as Stevens‑Johnson syndrome. Patients should report unexplained jaundice, severe bone pain, sudden shortness of breath, or rash promptly to their physician.

Letrozole should not be used by pregnant or breastfeeding women, premenopausal patients, or individuals with known hypersensitivity to letrozole or any component of the formulation. Patients with severe hepatic impairment should also avoid letrozole unless a specialist determines it is safe.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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