Fed it 2 winters ago and it seemed fine. Went to buy it last winter and local shop couldn't get it. Apparently they weren't allowed to sell it! Gave up because next supplier was miles away..
It was the best of all the other conditioning feeds I had tried up till then. It didn't work quickly for my horse but when I could no longer get it I bought Copra which put condition on very fast. I do think that the needs of each horse are different and what worked for my mare may not work for your horse.