Allergy Supplement with Plant Sterols for Dogs Only Natural Pet Immune Balance Allergy Support proprietary blend features phytosterols, a powerful natural compound, that helps your pet maintain a healthy balance in their immune system, all without the side effects. Whether your pet is experiencing seasonal allergies, food allergies, or other immune concerns, this allergy immune supplement for dogs is ideal for excessive licking, congestion and discomfort. Discover the allergy supporting properties of plant sterols with Immune Balance Allergy Support. Most allergies and auto-immune support needs are caused by an imbalance in your pet's immune system that cause uncomfortable problems. Rather than confronting symptoms or strengthening your pet's immune system, Immune Balance works to balance the immune system, making it ideal for overactive and under-active immune systems.