Slippery Elm Bark is the inner bark of the slippery elm tree which is not only packed with nutrients but has wonderful lubricating and anti-inflammatory properties. Slippery Elm's is a soothing, demulcent that lubricates the digestive tract. Use when your pet has an upset stomach for example as a result of a change in food may cause a temporary GI upset or as a result of tension or a change in a daily routine or going on a trip. In cases of diarrhea consider slippery elm to ease the symptoms, along with a probiotic. For severe, acute GI problems consult your veterinarian promptly.