Arimidex among others, is a medication used in addition to other treatments for breast cancer. Specifically it is used for hormone receptor-positive breast cancer. It has also been used to prevent breast cancer in those at high risk. It is taken by mouth.

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Arimidex (Anastrozole)is the a Type II non-steroidal aromatase inhibitor. It prevents the enzyme that converts hormones to estrogen from bonding that the receptor. It is over 50% effective at reducing the conversion of testosterone to estrogen. Although originally developed as a treatment for breast cancer, it has become a popular staple for performance enhancing athletes for reducing the side effects of excessive estrogen from androgen down regulation. Moreover, Arimidex is a powerful Selective Estrogen Receptor Modulator (SERM). It can be utilized as an anti-estrogen during an anabolic steroid cycle to prevent estrogenic related side effects.


Arimidex is quite effective at suppressing estrogen down regulation and so you do run some risks with this drug in regards to negative effect of low estrogen. Low estrogen effects blood lipid profile, joints, and immune system function.


Active half-life: 48 hours

Recommended dosage: 0.5mg-eod


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