An abnormal bout of colic like a twisted colon or an entrapped intestine due to a strangulating lipoma, the stone, tumors and extreme sand impaction this product cannot help and you need the assistance of vets. But normal impactions this stuff is extremely good at stopping. It is always your option to what you do for colic, but I have seen this product work to many times to even start to dis-credit it. A long shelf life, so I do not have to worry if and when I do have to deal with colic because I am ready. God bless you and your horses for the stress and suffering you will put yourselves through for no reason but dis belief. On another form someone else described Equine Colic Relief (USA) as LIQUID GOLD. I thought that was a good description and my personal belief is every horse owner should at least try it before they debunk it, your loss.