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. Chemistry
EEs contain synthetic, plant-derived estrogens and are manufactured from soybeans and yams. History
EEs were introduced for medical use by 1970. Society and culture
Generic names
Estrogens, esterified is the generic name of the drug and its USP. It is also known as esterified estrogens. Brand names
EEs are marketed under a variety of brand names including Amnestrogen, Estragyn, Estratab, Evex, Femibel, Femogen, Menest, Neo Estrone Tab, and Oestro-Feminal alone, and, in combination with methyltestosterone, under the brand names Covaryx, Delitan, Eemt, Essian, Estratest, Feminova-T, Menogen, and Syntest. Availability
EEs are or have been marketed in Argentina, Chile, Switzerland, and the United States. Both EEs and the combination of EEs and methyltestosterone are listed as being marketed only in Chile and the United States as of present. See also
Esterified estrogens/methyltestosterone
Estrogenic substances
Conjugated estriol
List of combined sex-hormonal preparations


== References ==
Bacitracin/polymyxin B (trade name Polysporin among others) is a topical antibiotic cream or ointment. The active ingredients are polymyxin B, bacitracin and occasionally garamycin or gramicidin. Though Polysporin is marketed in the United States, it holds a much smaller market share than in Canada and acts as a substitute to J&Js Neosporin for those allergic to the antibiotic neomycin; although allergy to Bacitracin/Polymyxin B has also been reported. There is also an ophthalmological ointment, eye and ear drops. References
External links
Official Canadian Site
Official U.S. Site