Hmm... Your information could very well be true.However, I might question spending the money on that rather than goingto the vet. Ivermectin is used for the treatment ofparasites. It is a commmon ingredient in heartworm pills (fordogs) and other such anti-parasitic medacations. It can evenbe used in humans in some cases. However, I have a hard timeunderstanding how this could help fix your rabbit's neck, as parasitesseem to be an unlikely cause. Similarly, Terramyacin issimply an anti-biotic. This is more likely to have effectthan ivermectin, but I'm still not convinced it is the right path totake. However, I could be mistaken, just wanted to offer myadvice and hopefully help prevent wasted money for you... Goodluck!