<unk> s <unk> s) are a class of medication that acts on the estrogen<unk> .  A characteristic that distinguishes these substances from pure<unk>  agonists and antagonists is that their action is different in various tissues, thereby granting the possibility to<unk> ly inhibit or stimulate estrogen-like action in various tissues.
Selective estrogen receptor modulator
Antiandrogen
Conjugated estrogens 
Esterified estrogens
Antagonist 
Sex steroid
Gonadotropin-releasing hormone antagonist
Aldosterone antagonist