A scientifically formulated, multiple prebiotic feed, including a patented fermented extract from Jerusalem Artichoke. Ulsa-X supports the efficient functioning of the horse’s digestive system by supporting an optimal balance of beneficial gut microbes versus harmful species of gut bacteria. When fed in higher quantities Ulsa-X can improve condition. Suitable for horses which require support to maintain gastrointestinal health, those prone to competition stress, older horses and convalescing horses.