Full Bucket products and Forefront Equine's ForeRunner paste. Both amazing products
I use biotic 8 by omega alpha
For my horse, I use Sedochol. But I advise you to go see a veterinarian so that he can help you as much in the choice of products and also on the use. You can also go to specialists who are specialized in nutrition (this is what I did before giving Sedochol for my horse).