Is likely to be deslorelin. Information on importing that is present
in the past posts/ archives of the FML and FHL. See my addy lines for
those URLs. They are easy to search and the applicable messages were
within the last month or two.

Gonadotropin Releasing Hormone vaccines (GnRH vaccines) are different.
There are such vaccines for other animals which might work for ferrets,
and there is some current work on developing one specifically for
ferrets.

Sukie (not a vet)

Recommended ferret health links:
http://pets.groups.yahoo.com/group/ferrethealth/
http://ferrethealth.org/archive/
http://www.afip.org/ferrets/index.html
http://www.miamiferret.org/
http://www.ferrethealth.msu.edu/
http://www.ferretcongress.org/
http://www.trifl.org/index.shtml
http://homepage.mac.com/sukie/sukiesferretlinks.html
all ferret topics:
http://listserv.ferretmailinglist.org/archives/ferret-search.html

[Posted in FML 6426]