I have had my vet buy the 4 month doses; I think each one was around $225 for one shot shipped. It's from Professional Arts Pharmacy, 1-800-832-9285. A vet has to buy them. I know there are other places that are compounding the smaller doses for 1 month or two months, but I have never used them. Perhaps people can share so we all have the information and options! A really good page with lots of information is Miami Ferret - http://www.miamiferret.org/fhc/about_lupron.htm. Laryssa [Posted in FML 6120]