O2B K9+ L-R-G Relief combines homeopathic remedies and potent herbs to support the upper respiratory system's natural responses to environmental allergens including pollens, chemicals, food, dander, insect bites or stings. In a convenient liquid spray O2B K9+ L-R-G Relief has been professionally formulated to alleviate signs and symptoms of environmental allergies for animals suffering seasonal allergies and also helps them to boosts immunity.