Pure quercetin powder extracted from Sophora japonica (the Japanese pagoda tree). Quercetin is a plant flavanol, a type of polyphenol known for its potent antioxidant properties, found in many plants and foods, such as red wine, onions, green tea, apples, and berries.
Ingredients: Quercetin.
½ level teaspoon = approx. 500 mg Quercetin