I am from Australia, have Standard Poodles who can be prone to bloat. Will always keep Bloat Busters on hand for any type of tummy upset, regurgitation or gagging. Don't know what makes this product work but tummy rumbles are gone within 20 min. If 1CC doesn't do the job I give another 10 min later and dogs are settled. I believe it has prevented bloat on one of my dogs, can't prove it tho. Tough wood, I have not used it when a dog has started to bloat and hope I will never have to test that far.