Letrozole is used in the treatment of breast cancer and infertility due to anovulation.
Letrozole is an aromatase inhibitor. It works by decreasing the amount of estrogen (natural female hormone) produced in the body. This can slow or stop the growth of some breast cancers that need estrogen to grow. In addition, it is also useful in infertility whereby it increases the release of certain hormones to stimulate the release of eggs from the ovaries.
Hypercholesterolaemia, Hot flushes, Increased sweating, Musculoskeletal (bone, muscle or joint) pain, Fatigue