Global herbs prebioherb a prebiotic is a product that helps the good micro organisms in the bowel work better and supersedes the less desirable ones balancing digestion is very important to your horse and prebioherb is a concentrated formula in which the herbs help the microorganisms in the gut to work effectively the combined approach of feeding prebioherb will let your horse flourish thrive and stay fit and healthy global herbs prebioherb can be used to maintain top condition and app