▁circul ates ▁at ▁concentr ations ▁ 5 – 1 0 ▁times ▁greater ▁than ▁those ▁of ▁dan az ol ▁and ▁is ▁twice ▁as ▁pot ent ▁as ▁dan az ol ▁in ▁disp la cing ▁test oster one ▁from ▁SH B G . ▁As ▁such , ▁most ▁of ▁the ▁occupation ▁of ▁SH B G ▁by ▁dan az ol ▁may ▁actually ▁be ▁due ▁to ▁this ▁met abol ite . ▁ ▁Ant ig on ad otrop ic ▁activity ▁Via ▁its ▁weak ▁pro gest ogen ic ▁and ▁and ro gen ic ▁activity , ▁through ▁activation ▁of ▁the ▁PR ▁and ▁AR ▁in ▁the ▁p itu it ary ▁g land , ▁dan az ol ▁produces ▁ant ig on ad otrop ic ▁effects . ▁Although ▁its ▁does ▁not ▁significantly ▁affect ▁bas al ▁l ute in izing ▁h orm one ▁( L H ) ▁and ▁fol lic le - st im ulating ▁h orm one ▁( F SH ) ▁levels ▁in ▁pre men op aus al ▁women ▁( and ▁hence ▁does ▁not ▁prof ound ly ▁suppress ▁g on ad otrop in ▁or ▁sex ▁h orm one ▁levels ▁like ▁other , ▁stronger ▁ant ig on ad otrop ins ▁do ), ▁the ▁drug ▁prevents ▁the ▁mid - cycle ▁sur ge ▁in ▁the ▁levels ▁of ▁these ▁h orm ones ▁during ▁the ▁men stru al ▁cycle . ▁By ▁doing ▁this , ▁it ▁suppress es ▁increases ▁in ▁est ro gen ▁and ▁pro g ester one ▁levels ▁at ▁this ▁time ▁and ▁prevents ▁ov ulation . ▁ ▁Mechan ism ▁of ▁action ▁in ▁end omet rios is ▁Because ▁dan az ol