I swear by Medroxy (depo). I know a lot of people feel very negatively about it, but it turned my anxious, skinny, reactive, and admittedly, dangerous TB into a calm, cool, fat, pleasant horse. We’ve only done one shot (4 weeks in) and it doesn’t have to be a long term situation. My trainer has seen plenty of horses that are stuck in their anxiety. Depo for a couple months and get them in the program you want them in. Then slowly take away the depo.
That’s our plan anyways. Hopefully once he’s ‘reprogrammed’, the medroxy will be unnecessary and as long as he stays in the exact same schedule, I think he will be fine. Horses like this thrive on routine.
Also, I’m looking at working through some mounted police training for some desensitizing. Obviously while on medroxy
I also agree a double dose of MagRestore is fantastic, if not for the calming, then to ease that tension that these high strung horses have. Mine goes: anxious --> tense --> body sore --> reactive to any aids because he’s so body sore --> time off --> excess energy --> anxious. Never ending circle we are trying to break right now and after 7 years with this horse I have to say IT’S WORKING.
Other things I’ve tried that didn’t work:
Oral calming supplements, 24/7 turn out, half day turn out, free choice turnout, no alfalfa, all alfalfa, no concentrates, grain free, soy free, corn free, RB, 'anxiety buddy (goat), riding twice a day, pro rides 5x per week, light work mostly consisting of trail rides, boarding at a busy stable, boarding at a brood mare farm, boarding at a retirement farm, boarding with cows, showing a lot, not showing at all, any equipment change combo you could ever imagine, riding only in open fields, riding only in a round pen, chiro, body work, stretches, massage. Any combo of these you can imagine.
Sometimes you meet a horse that completely changes your way of thinking. This horse has been the most constantly humbling experience in my life.