Got it as a free gift and I was pleasantly surprised. The scoop is very small, so a bit deceptive. No negative reactions and no rejections. I would consider adding it to my supplement list.

Love all your products! Wish you'd make the probios in a medium size though! Just saying. I'll buy them anyway! So glad Dr. Kellon is onboard!

Works great for my mares loose poop! Only a small amount is needed and the price is very reasonable.

I've just started my horse on it since I had to finish what I had left of the former stuff. Been a week and everything seems fine

I got as a promotional and have not used yet. Thanks for the sample.

I’m having issues to place a reorder. I need two tubs. Please respond.

To soon to give opinion. Satisfied so far.

After two years of loose manure after she foundered, my mare's manure is finally normal once again. This product is very effective within the first month or two and I plan to keep her on it going forward.

Great product. Easy to add to feed.

Eddie struggled with weird poop for a while after I first bought him. ProBios helped some, but MadBarn’s Optimum Probiotic really set his GI tract right. Along with Three Amigos, Omneity, and W-3 Oil, he’s probably the best looking big Thoroughbred I’ve ever seen, and my vet agrees. We love MadBarn!