Osta Plex is a non steroidal androgen receptor aganist that binds to the androgen receptors with high affinity and selectivity. Osta Plex does not bind the estrogen receptor and thus, cannot be converted to estrogenic metabolites. Osta Plex is considered a selective androgen receptor modulator, which doesn't convert to DHT or display any of the side of effects of Dihydrotestosterone.

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