Arimidex (anastrozole) is at least as effective as tamoxifen for advanced breast cancer

Preliminary evidence suggests that Arimidex (anastrozole) is at least as effective as tamoxifen for advanced breast cancer.

Tamoxifen is currently the "gold standard" for women with estrogen receptor-positive breast cancer.

Arimidex is used as second-line therapy...for breast cancer that progresses despite treatment with tamoxifen.

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