Veterinarian formulated with antioxidant-rich blend of high-quality botanical ingredients that supports natural histamine levels for seasonal discomfort. Relieves itching for dogs with seasonal allergies by supporting skin health and maintaining normal histamine levels, infused with sea kelp to support absorption as well. Such as healthy digestion and immune response Citrus Bioflavonoids: 150 mg, Nettle Extract: 150 mg, Ascorbic Acid (Vitamin C): 100 mg, Quercetin: 75 mg, Perilla Leaf Extract: 50 mg, Proprietary Absorbing Oxidant Blend: 50 mg