It's hard to find quality probiotics for horses that don't have a lot of other fillers in them and require a huge pail. Mad Barn's Optimum Probiotic is a rare gem. In fact, when the box arrived (2 days later!), I first thought there was a mistake because the package was so small. Nope! It's just so concentrated that it only requires a very small amount. I bought it to help with a detox for one of my mares and ended up putting the whole herd on it (and our donkey friend). They're all thriving - despite the cold temps and deep snow right now, they're all back to running, rearing, and playing joyfully. Thanks Mad Barn!

We have started our 4th 5KG tub or IR supplement with our 20 plus year old Morgan Mare and pleased with our horses progress. Has taken well to the product and we feel that the coming spring will confirm a definite improvement in her.

Very helpful and wonderful products.

I am quite disappointed this product which seemed to help my previous TB - did not do anything for my new horse. He's been on it from day one...3 months later I got him scoped. He has both squamous and glandular ulcers, and the latter are bleeding. Would not buy again.

Super happy with my Mad Barn purchasing experience. Bought the zinc supplement and am trying it on my goats to improve coat and skin health in winter. They've only been on it a week so no idea if it's making a difference yet :)

Started using this after using the Equitop Myoplast (sugar coated spirulina), great source of protein and a lot cheaper than the myoplast. My horse has developed so much topline since starting on all the Spirulina supps. Only downside is that it's a little messy. But that is a small price to pay. Thank you to MadBarn for creating awesome and affordable products!

I don't know what I would've done without this supplement when my mare came off the track! It changed her entire demeanor because it made her feel better. She went from aggressively kicking out any time she was touched to being an absolute kitten. If I ever get another OTTB they will be put on Visceral immediately.

Just what I was looking for I was looking for an affordable zinc & copper supplement to counteract our high iron pasture and water. This fits the bill perfectly, and I love that it will be shipped automatically. The horses are eating it happily mixed in with a handful of oats and some apple cider vinegar. Not sure if they'd be a fan of it plain ;) I've only been using it about 3 weeks, but I swear the thrush I've been battling all winter is looking better already!

I was looking for an affordable zinc & copper supplement to counteract our high iron pasture and water. This fits the bill perfectly, and I love that it will be shipped automatically. The horses are eating it happily mixed in with a handful of oats and some apple cider vinegar. Not sure if they'd be a fan of it plain ;) I've only been using it about 3 weeks, but I swear the thrush I've been battling all winter is looking better already!

My 14 year old gelding was diagnosed with a Vitamin E deficiency recently and was having a lot of hoof/abcess issues. His feet have been perfect since I started using the supplement. It's easy to give, and it only took my picky guy a few feedings to get used to it being in there. It is also quite cost effective.