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

Letrozole Sanoswiss

Active Ingredient:
Letrozole
Origin:
EU

Letrozole Sanoswiss (Letrozole)

Letrozole, the active ingredient in Letrozole Sanoswiss, is an aromatase inhibitor presented as a tablet for oral use. It reduces estrogen production and is employed in the treatment of hormone‑receptor‑positive breast cancer in postmenopausal women. GNH India supplies Letrozole Sanoswiss as a licensed, GDP‑compliant international pharmaceutical supplier serving oncology centres worldwide.

Manufacturer / TM Owner

Uab Sanoswiss

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Indications & Clinical Uses

Letrozole is an aromatase inhibitor used in hormone‑dependent breast cancer therapy.

  • Hormone receptor‑positive breast cancer in postmenopausal women: reduces estrogen levels to inhibit tumor growth.
  • Adjuvant treatment of early‑stage breast cancer: lowers the risk of disease recurrence after surgery.
  • Metastatic breast cancer: provides disease control in advanced, estrogen‑driven tumors.

How It Works

  • Letrozole selectively and non‑steroidally inhibits the aromatase enzyme, which converts adrenal and ovarian androgens into estrogens. By blocking this conversion, systemic estrogen concentrations fall, depriving estrogen‑dependent tumor cells of a growth stimulus and thereby slowing or halting cancer progression.

Side Effects

Common Side Effects

  • Hot flashes: sudden feeling of warmth, often with sweating.
  • Joint and muscle pain: aching in joints or muscles.
  • Fatigue: persistent tiredness.
  • Nausea: feeling of queasiness.
  • Headache: mild to moderate head pain.
  • Dizziness: sensation of light‑headedness.

Serious or Rare Side Effects

  • Osteopenia or osteoporosis: decreased bone mineral density, increasing fracture risk.
  • Thromboembolic events: blood clots in veins or arteries.
  • Severe liver injury: marked elevation of liver enzymes or hepatitis.
  • Allergic reactions: rash, swelling, or anaphylaxis.
  • Cardiac arrhythmias: QT interval prolongation or other rhythm disturbances.

Precautions & Warnings

Letrozole requires careful monitoring and specific precautions.

  • Bone health monitoring: assess bone mineral density regularly.
  • Cardiovascular assessment: evaluate risk factors for thrombosis and heart disease.
  • Liver function testing: check hepatic enzymes before and during therapy.
  • Pregnancy contraindication: avoid use in pregnant or breastfeeding women (Category X).
  • Drug interaction review: assess concomitant medications for potential interactions.
  • Store at ambient temperature: keep below 25 °C, in the original packaging, protected from moisture.

Avoid Interactions

Letrozole may interact with several medicines, requiring vigilance.

Major Interactions (Avoid)

  • Strong CYP3A4 inducers (e.g., rifampin, carbamazepine): may markedly reduce letrozole exposure.
  • Tamoxifen: antagonistic estrogen‑modulating effects can diminish therapeutic benefit.
  • Certain chemotherapy agents that share metabolic pathways may increase toxicity.

Moderate Interactions (Monitor Closely)

  • Anticoagulants (e.g., warfarin): letrozole can enhance anticoagulant effect, increasing bleeding risk.
  • SSRIs or SNRIs: may exacerbate hot‑flash symptoms.
  • Cholesterol‑lowering agents (e.g., statins): monitor for altered plasma levels.

Frequently Asked Questions

Letrozole Sanoswiss is prescribed for hormone‑receptor‑positive breast cancer in postmenopausal women. It is used as adjuvant therapy after surgery to reduce recurrence risk, and also in metastatic disease to control tumor growth by lowering estrogen levels.

Letrozole works by selectively inhibiting the aromatase enzyme, which converts androgens into estrogens. By blocking this conversion, systemic estrogen concentrations fall, depriving estrogen‑dependent cancer cells of a key growth signal and thereby slowing disease progression.

The exact dose of Letrozole is determined by the prescribing clinician based on the individual patient's condition, renal and hepatic function, and treatment goals. Physicians typically start with a standard adult dose, but adjustments are made according to therapeutic response and tolerability.

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

To order Letrozole Sanoswiss, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies, and procurement teams worldwide, and will request verification of trade or institutional credentials before providing pricing, availability, shipping details, and import documentation.

Letrozole, anastrozole, and exemestane are the three main aromatase inhibitors. Letrozole is a non‑steroidal, highly potent inhibitor with a long half‑life, often preferred for its consistent estrogen suppression. Anastrozole is similar but slightly less potent, while exemestane is a steroidal inhibitor with a different binding profile, which may be chosen based on patient tolerance or prior therapy.

Letrozole tablets should be stored at ambient temperature, preferably below 25 °C. Keep them in the original container, protect from moisture and direct sunlight, and ensure the packaging remains sealed until use to maintain product stability.

Letrozole is taken orally as a tablet, usually once daily. It can be swallowed with water and may be taken with or without food, according to the prescriber's instructions. Consistent daily dosing helps maintain steady drug levels for optimal therapeutic effect.

Serious risks include significant bone loss leading to osteoporosis or fractures, increased risk of thromboembolic events such as deep‑vein thrombosis, severe liver injury indicated by marked enzyme elevations, and rare cardiac arrhythmias. Patients should report any new bone pain, swelling, shortness of breath, or jaundice promptly.

Letrozole should not be used by pregnant or breastfeeding women, premenopausal women, patients with severe hepatic impairment, or individuals with known hypersensitivity to letrozole or any of its excipients. Clinicians must also evaluate contraindications related to bone health and cardiovascular risk before initiating therapy.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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