Solgar® Quercetin Complex Includes The Important Bioflavonoid Quercetin In A Synergistic Formula With Ester-C® Plus To Provide Unique Antioxidants As Well As Immune Health Support.* Quercetin Is Found In Onions And Other Foods. It Possesses Antioxidant Properties Which Help To Fight Free Radicals.* Ester-C® Plus Provides A Unique, Ph Neutral (Non-Acidic), Form Of Vitamin C That Is Gentle On The Stomach. Ester-C® Plus Offers The Additional Benefits Of Incorporating Acerola Berry, Citrus Bioflavonoids, Rutin And Rose Hips. This Formula Also Features Bromelain, A Natural Enzyme Derived From Pineapple.*The Gold Standard Since 1947:- For Over 70 Years Solgar® Has Been Committed To Quality, Health, And Well-Being. Our Ongoing Mission Is To Create The Finest Nutritional Supplements In Small Batches, Made Possible Through Tireless Research, Using Only The Finest Raw Materials.We Continuously Push Ourselves To Deliver To The Gold Standard:- Science-Backed Formulas- Responsibly Sourced Ingredients- Avoiding The Use Of Artificial Ingredients Or Fillers- Small Batch, In-House Manufacturing- Highest Quality Standards: Usp Water Filtration, Hepa Air FiltrationIngredients:- Vegetable Cellulose, Vegetable Stearic Acid, Microcrystalline Cellulose, Silica, Vegetable Magnesium Stearate.Free Of:- Gluten, Wheat, Yeast, Sugar, Salt, Artificial Flavors, Artificial Sweeteners, Artificial Preservatives, Artificial ColorsWarnings:- If You Are Pregnant, Nursing, Taking Any Medications Or Have Any Medical Condition, Please Consult Your Healthcare Practitioner Before Taking Any Dietary Supplement. Discontinue Use And Consult Your Doctor If Any Adverse Reactions Occur. Keep Out Of Reach Of Children. Store At Room Temperature. Do Not Use If Outer Bottle Seal Is Missing Or Damaged In Any Way.