EEs consist primarily of sodium estrone sulfate and sodium equilin sulfate, and are very similar to conjugated<unk>  (CEEs, conjugated equine<unk> ; brand name Premarin). However, EEs and CEEs differ in the sources of their contents and in the percentages of their constituents; CEEs consist of approximately 53% sodium estrone sulfate and 25% sodium equilin sulfate, while EEs contain about 75 to 85% sodium estrone sulfate and 6 to 11% sodium equilin sulfate. EEs have been found to produce similar serum levels of estrone and estradiol relative to CEEs, although with higher levels of estrone and lower levels of equilin. One study found that the risk of venous thrombosis may be less with EEs relative to CEEs.
Esterified estrogens
Xenoestrogen
Phytoestrogen
Conjugated estrogens
Antiestrogen
Tissue-selective estrogen complex
Nonsteroidal estrogen
Phytoprogestogen