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Letrozole (Femara) is an aromatase inhibitor approved to treat hormone receptor-positive breast cancer in postmenopausal women. It is used as adjuvant therapy after surgery, extended adjuvant therapy following tamoxifen, and for advanced or metastatic disease.

Letrozole blocks the aromatase enzyme, which converts androgens into estrogen in postmenopausal women. By reducing circulating estrogen levels, it deprives hormone receptor-positive tumor cells of the estrogen they need to grow.

The most commonly prescribed dose is 2.5 mg taken orally once daily. Your oncologist determines the appropriate dose and duration based on your specific diagnosis and treatment plan.

Common side effects include joint and muscle pain, hot flashes, fatigue, night sweats, nausea, and bone loss (osteoporosis). Regular monitoring of bone density is often recommended during long-term therapy.

Letrozole is FDA-approved for postmenopausal women. Use in premenopausal women is generally not standard practice outside of specific fertility-related contexts and requires specialist oversight. Doctronic refills are appropriate only for established, physician-directed use.

Adjuvant letrozole is commonly prescribed for 5 years, though extended therapy beyond 5 years may be recommended in some cases based on individual risk factors. Your oncologist sets the treatment duration.

Doctronic uses an AI-guided evaluation to gather your medical history and symptoms, then routes your request to a licensed physician who reviews your information and creates a personalized treatment plan, including prescriptions when appropriate.

Yes. Doctronic works exclusively with licensed physicians whose consultations are doctor-reviewed and audited for quality. The platform is HIPAA-compliant, and your health information is kept secure and private.