Serving Size:One Teaspoon (4.9 mL) Active Ingredients: Oregon Grape (Mahonia aquifolium) Root Extract (1:1) 4.9mL Other Ingredients:Grain alcohol (41%) and purified water. Botanical Name: Mahonia aquifolium Root 1:1 Vegetarian Formula Gluten Free Hypoallergenic BOG5 Professional Formulas