Toremifine

Brand Names

Fareston® (There may be other brand names for this medication).

How is it Administered?

Toremifene is a pill, taken by mouth. Take it with a full glass of water at about the same time every day. You can take it with or without food.

What is it Used For?

Toremifine is used to treat metastatic breast cancer in women who are postmenopausal (stopped having menstrual periods) and whose tumors are estrogen receptor positive (ESR+).

How Does it Work?

Your body makes hormones to carry messages to certain “target” organs and tissues. Hormones are made in one gland, and then travel through the blood to their targets.

The main female hormone is estrogen. There are many cells in your body that have estrogen receptors on them. The estrogen attaches to the receptors and those cells will act a particular way.

Estrogen has been shown to cause the growth of some types of cancer cells. Toremifine is an anti-estrogen; it binds to the estrogen receptors on the cancer cells and stops estrogen from going into the cell. This eventually causes the cell to die.

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