What is letrozole 2.5 mg used for?
Letrozole 2.5 mg is an oral medicine (an aromatase inhibitor) used to lower estrogen levels in the body. Doctors prescribe it mainly for hormone-receptor-positive breast cancer in postmenopausal people. It’s also used in fertility treatment in some cases, depending on the clinical situation. [1]
How is letrozole 2.5 mg used in breast cancer?
Letrozole is commonly prescribed for:
- Treating early-stage or advanced hormone-receptor-positive breast cancer in postmenopausal patients
- Reducing the risk of cancer returning after initial treatment (in appropriate patients)
- Managing metastatic (advanced) hormone-driven breast cancer when it is estrogen-receptor positive [1]
How is letrozole 2.5 mg used in fertility?
Letrozole is used off-label in many fertility clinics to help induce ovulation, especially for people with ovulatory dysfunction (for example, when periods are irregular). It helps the ovaries develop follicles by reducing estrogen signaling. The exact dosing and cycle monitoring plan should be set by the treating clinician. [1]
What conditions does it NOT treat?
Letrozole is not used to treat breast cancer that is hormone-receptor negative, because lowering estrogen won’t target the tumor’s main growth driver. It’s also not a replacement for fertility care when there are other issues (for example, severe tubal blockage or certain causes of infertility). [1]
Key cautions and side effects people ask about
Common side effects can include hot flashes, joint or muscle pain, tiredness, and headaches. Because it lowers estrogen, it may also affect bone density over time. Letrozole should be used under medical supervision, especially in people with osteoporosis or high fracture risk. [1]
Sources
- https://www.drugpatentwatch.com/p/letrozole/5/