True. For maintenance I have gotten away with 12 X2/day for a 1200 lb horse
i already order it through entirely pets (my vets recommendation) and drive to Montana as it’s cheaper than Canada BUT it’s still about $50 can per tube so generic omeprazole it is for his daily dose! I save the expensive bank breaking stuff for multi week shows 
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Another option if you can get it in Canada is generic Nexium (esomeprazole). One study showed success with as little as 40mg per day for a 1,000lb horse. That was administered through a stomach tube so most people feed more but you can get esomeprazole in the U.S. at Walmart for around $15 for 42 20mg pills. Another study fed up to 1g per day so I think it’s pretty hard to overdose if you take a wag at the number of pills. The capsules are little and the horses just eat them with their feed.
I just started two horses on it and so far am seeing good results. Both horses were initially treated with UG. One is having a flare up a year later and the esomeprazole seems to be working well. The other just finished an initial 28 day UG regimen but when I tried to taper to 1/2 tube, he started showing symptoms again. I switched to esomeprazole and he also is responding well.
