Letrozole is a medication that is commonly used in the treatment of breast cancer in postmenopausal women. It belongs to a class of

Letrozole is a medication that is commonly used for treating certain types of breast cancer in women who have gone through menopause. It belongs to a class of drugs called aromatase inhibitors, which work by reducing the amount of estrogen produced in the body. This can help slow down or stop the growth of hormone receptor-positive breast cancer cells.

Dosage of Letrozole: A Comprehensive Guide

When it comes to treating certain types of breast cancer or fertility issues, Letrozole has emerged as a popular medication. However, understanding the appropriate dosage and following the prescribed instructions is crucial for maximizing its effectiveness and minimizing potential side effects. In this article, we will delve into the dosage recommendations for Letrozole.

What is Letrozole?

Letrozole, sold under the brand name Femara, belongs to a class of drugs called aromatase inhibitors. It is primarily used to treat hormone receptor-positive letrozolebuy breast cancer in postmenopausal women. Additionally, Letrozole is sometimes prescribed off-label to induce ovulation in women with fertility problems.

Dosage for Breast Cancer Treatment

The recommended dosage of Letrozole for breast cancer treatment is typically 2.5 mg taken once daily. It can be taken with or without food, but it’s important to take it at the same time each day for consistency. The duration of treatment may vary depending on individual circumstances and response to the medication.

Dosage for Fertility Treatment

For women undergoing fertility treatment, Letrozole is usually prescribed at a lower dose compared to breast cancer treatment. The typical starting dose is 2.5 mg per day, taken on days 3-7 of the menstrual cycle. This helps stimulate ovulation and increase the chances of successful conception. Your doctor may adjust the dosage or treatment duration based on your specific needs.

Potential Side Effects

Like any medication, Letrozole may cause certain side effects. Common side effects include hot flashes, joint pain, fatigue, nausea, and headaches. These symptoms are usually temporary and subside over time. However, if you experience severe or persistent side effects, inform your doctor immediately.

It’s important to note that Letrozole can have an impact on your bone health, so regular check-ups and monitoring may be necessary during treatment.


Letrozole is a valuable medication used to treat breast cancer and promote fertility in certain cases. Adhering to the prescribed dosage and guidelines provided by your healthcare professional is essential for achieving optimal results. If you have any concerns or questions regarding the dosage of Letrozole, consult your doctor for personalized advice.