I have some "Estro" pills; they are maximum strength; they are oblong shaped pills about1/2 inch long by about 1/4 inch thick and have a thin yellow coating on them that melts off easily when exposed to wetness; the inside of them looks hay colored and is grainey like that falls apart easily when wetted... What I'm wanting to know is what's in them drug wise and for what is there effect and purpose for humans?