Generic name	Brand name	How taken	Source of active ingredient
Conjugated estrogens	Premarin	Oral/cream	Pregnant mares' urine
Conjugated estrogens	Cenestin	Oral	Synthesized from soy and yams
Estradiol	Climara	Patch	Synthetic
Estradiol	Estraderm	Patch	Mexican yams
Estradiol/ Norethindrone acetate	Activella	Oral	Synthetic/synthetic
Estradiol	Estring	Vaginal ring	Mexican yams
Conjugated estrogens/ Medroxy progesterone acetate	PremPro	Oral	Pregnant mare urine/synthetic
Ethinyl estradiol/ Norethindrone acetate	FemHRT	Oral	Soy/soy
Estradiol/Norgestimate	OrthoPrefest	Oral	Soy/synthetic
Extradiol/Norethindrone acetate	Combipatch	Patch	Soy/yams
Micronized progesterone	Crinone	Vaginal gel	Mexican yams
Medroxyprogesterone acetate	Provera	Oral	Synthetic
Testosterone	Androderm	Patch	Soy
Testosterone	Androgel	Gel	Yams or soy
Sources: http:www.rxstat.net