Written by JANE ALLIN Research Analyst | Int'l Fund for Horses Since the introduction of Premarin in 1942, much controversy has followed the lucrative market monopoly of the world’s first conjugated equine estrogen therapy for the treatment of postmenopausal women. Historically, the number of PMU farms, sequestered mares and by-product foals steadily rose until the… Continue reading Wyeth wins, horses lose, in the Premarin® drug sales sweepstakes