Hoof problem

What is the vitamine or supplement that activates the circulation on the hoof?

Biotin is used for improving hoof quality and you can fidn it in supplements in your feed merchant store. Growth of the hoof stems from the coronet/coronory band, so i would advise you get a vet to check this out for any injury to the area. Also ask your farrier to check if your horse has 'boxy' feet as the frog supplies blood to the foot and needs to be in contact with the floor to do so. If it isnt then bloody supply to the hoof is limited so can cause problems. This can be corrected with good farriery. :)