Letrozole, clomid藥物機轉

clomid 排卵藥之機轉為抑制腦下垂體雌激素接受體estrogen receptor
letrozole之機轉為抑制aromatase, 抑制testosterone轉化為estradiol
導致體內雌激素濃度下降, testosterone濃度提高

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2569859/

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