The studies I’ve seen showed a pretty whopping dose of cimetidine were necessary to treat ulcers in equines. Like this one, which says 18mg/kg q8h wasn’t enough, but 48mg/kg might be.
https://beva.onlinelibrary.wiley.com/doi/abs/10.1111/j.2042-3292.2001.tb00105.x
48mg/kg is just over 26 grams for a 1200 pound horse, which is 130 200mg pills.
How did you come to the dose you used?
My vet tech recommended it. Like I said, this mare probably only had an acid stomach, not actual ulcers. She had 1 day of girthyness immediately following 10 days of stall rest with iv doxy. I also got her out on full day pasture a little earlier in the spring than I normally do. The thought was the tagamet would nip the problem and if she didn’t improve we would have go to a complete gastroguard treatment. Fortunately, it and or the pasture fixed the problem.
Can someone with experience elaborate on this and what it looks like in horses?
I think your vet tech might have been confusing the melanoma treatment dose, which is more like along these lines, with a dose that would be therapeutic at raising the pH of the stomach.
In my very expressive does not tolerate any discomfort mare, she swung her head at me once when tightening her girth. Due to her past history with ulcers that were treated extensively, and her more current history of recent medication and stall confinement, I jumped on getting something into her right away. It may have gone away on its own, but I wasn’t about to wait.
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