Dear madwilson, Hairloss is not a usual side effect associated with
Arimidex.
Arimidex is an aromatase inhibitor. This means it blocks the enzyme aromatase (found in the body's muscle, skin, breast and fat), which is used to convert androgens (hormones produced by the adrenal glands) into estrogen. In the absence of estrogen, tumors dependent on this hormone for growth will shrink. For more information regarding this drug and side effects you can check out the website chemocare.com.