Hill's® Prescription Diet® i/d® Stress provides all the nutrition your dog needs during episodes of stress-related digestive upset and can be used long-term. If a stressful event is foreseeable, it is recommended to start feeding in advance. Key Benefits: Formulated to help manage stress, helps improve digestion and stool quality, promotes beneficial microflora, calms and soothes digestive tract, supports a healthy immune system, highly digestible and low in fat, enriched with prebiotic fiber, high levels of omega-3 fatty acids