PLEASE! Consider phytoestrogens. I did not know the cruelty associated with premarin "production" until I had an insurance physical and the animal loving nurse educated me. I personally felt yucky on premarin...was only on it for a month...started on phytoestrogens. Took them for a year and have been off ever since and that was 11 years ago. Absolutely no problems at all.
This is the least gruesome info I could attach.
http://www.horsetreatment.com/horse-...abuse-premarin
If you want a horse, United Animal Nation has a link to adopt premarin mares and foals.