Flutamide is an oral non-steroidal antiandrogen drug primarily used to treat prostate cancer. It competes with testosterone and its powerful metabolite dihydrotestosterone (DHT) for binding to androgen receptors in the prostate gland. By doing so it prevents them from stimulating the prostate cancer cells to grow. Flutamide has been largely replaced by a newer member of this class bicalutamide due to a better side-effect profile.
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