Thia-Cal™ is a daily thiamine (vitamin B1) and magnesium supplement that helps maintain calmness and promotes healthy nerves in your horse. Thia-Cal™ is balanced with calcium and other electrolytes in liquid or powder form that is palatable and safe for your horse. Thia-Cal™ is ideal for performance horses as it does not contain ingredients like tryptophan, valerian root, or kava kava.