Purity 99% Raw Steroid Powder Letrozole CAS 112809-51-5 For Treating Breast Cancer

Introduction:

Letrozole is a type of hormone therapy drug. It is also known as Femara.

It is a treatment for breast cancer.

Letrozole lowers the levels of the female sex hormone oestrogen in the body. Oestrogen stimulates some breast cancers to grow. These breast cancers are called hormone sensitive or hormone receptor positive. Letrozole can stop or slow the growth of these cancers.

Letrozole only works in women who have had their menopause.

After the menopause, women don't produce oestrogen from their ovaries. But they still produce a small amount by using an enzyme called aromatase. This turns other sex hormones called androgens into oestrogen. This change happens mainly in fatty tissue, muscle and the skin. Letrozole is a type of drug called an aromatase inhibitor. It blocks aromatase so that it can't change androgens into oestrogen.