A client asked me if I knew anything about the use of CBD as a management tool/long-term alternative to NSAIDs for pain in horses. I use CBD oils in my bodywork practice and have found them to be extremely helpful anecdotally in both clients and for myself/my husband, but I had never really considered applications for horses.
Dr. Deb, are you aware of any research or do you have knowledge on the use of CBD in equines? CBD is trending towards becoming one of those fad supplements in animals, from what I can see, and I am sure some are interested in it's applications as a calming agent (especially for horses, since this is a multi-million dollar industry by itself) but since those of us who have chosen this path of horsemanship recognize "calming supplements" to be a Band-Aid at best, I'm interested more in the pain relieving properties.
Oh. Well, I'd say CBD is also trending to become a fad supplement for humans too. Now I also see horse supplements containing turmeric, which has been another fad for humans, although actually turmeric or turmeric combined with black pepper may have some demonstrable positive effects and apparently no side effects.
The last fad before turmeric was fresh or raw flax seed, which as I mentioned previously in this forum, is as stupid as borage, because both of them are highly toxic (fresh flaxseed metabolizes to cyanide, and borage contains pyrilozidine alkaloids which are highly potent at killing liver cells, worse than alcohol).
As to CBD, I see also a recent article in our local newspaper here in the San Joaquin Valley that a couple of enterprising farmers are applying for permits to grow hemp, i.e. marijuana that's about as good at getting a person high as smoking a length of rope. Low octane as to TCP's in other words; but it's bred to have a lot of CBD (they were calling it by some other name and that's why I didn't recognize your term CBD) and they expect to make a killing on it. They're calling it the next billion-dollar crop out here.
There are a lot of people in pain, so it isn't just about the hemp industry but NSAID's and looking for alternatives to those since they, too, have destructive effects upon the liver and plus they're usually blood thinners so excessive use can lead to internal bleeding. CBD's work very well on some peoples' pain and apparently without getting them high.
But to answer your question -- no, I know of zero research on this in horses, but I expect there will be some because I think we have to take CBD's more seriously than turmeric, borage, or flaxseed. Getting funding for that will probably require the veterinarian who does it to dream up some reason why cows are in pain and then use a group of horses as the outgroup comparison -- 99% of horse research has been done that way because it's almost impossible to get a NSH or NIH grant for straight horse work. Cheers -- Dr. Deb