Just because a supplement is 100% herbal and natural, does NOT mean it is show safe. The use of herbal or natural products to affect the performance of a horse or pony in a calming or an energizing manner is forbidden by FEI regulations. Because of this, popular calming herbal ingredients like Chamomile and Lavender are banned in USEF and FEI competitions. The FEI does not test or approve herbal or natural products, meaning it is the sole responsibility of the manufacturer to uphold the regulation.