<unk>  is a naturally occurring estrogen sex hormone found in horses as well as a medication. It is one of the estrogens present in the estrogen mixtures known as conjugated estrogens (CEEs; brand name Premarin) and esterified estrogens (EEs; Estratab, Menest). CEEs is the most commonly used form of estrogen in hormone replacement therapy (HRT) for menopausal symptoms in the United States. Estrone sulfate is the major estrogen in CEEs (about 50%) while<unk>  sulfate is the second major estrogen in the formulation, present as about 25% of the total.
Equilin
Zonulin
Hippulin
Apamin
Collectin
Progerin
Fasciculin
Retapamulin