There is more than one company producing the deslorelin implants. The implant my ferret received Tuesday came from Austrailia. I am pretty certain the company, Peptech, is the company that Doctor Wagner has been receiving his implants from for the Des implant study he has been running in Pittsburgh for the past few years. The horse des implant has been around for a few years and its success is probably a good part of the reason the FDA and customs are now allowing these 4.7 mg implants into the U.S. Another ferret savvy vet here in the Rochester, NY area has ordered from Peptech and is waiting as the implants are on back order. This was also the situation back in September at the time I contacted Peptech. However, when my Doc placed his order they arrived in 10 days. Vets can gain more information from Doc Wagner's published study in the July 2009 issue of the Journal of Exotic Pet Medicine. Sorry, I do not have a link. Any vets dealing with ferrets or Exotics should be aware of this Journal. CR Feed rescued animals in two clicks http://www.theanimalrescuesite.com/clickToGive/home.faces?siteId=3 LJ [Posted in FML 6504]