Leisure Vits & Mins is formulated for a horse in light work or at rest. It now contains biotin so may be beneficial for horses and ponies prone to laminitis with poor hoof quality. Performance Vits & Mins is formulated for horses in moderate to hard work or those with increased nutritional requirements such as veterans. Performance Vits & Mins contains a full range of B vitamins so is ideal for those on low fibre diets.