Quercetin features pure quercetin derived from a natural plant source. Quercetin is a flavonoid found in many fruits and vegetables and is one of the most bioactive and best studied bioflavonoids. Each vegetarian capsule provides 250 mg of quercetin. features pure quercetin derived from a natural plant source quercetin is one of the most bioactive and best studied bioflavonoids each vegetarian capsule provides 250 mg of quercetin Ingredients Quercetin, hypoallergenic plant fiber (microcrystalline cellulose). Vegetarian capsule (hydroxypropyl methyl cellulose). Directions For Use As a food supplement, take 2-4 capsules daily, in divided doses, with or between meals, or as directed by a healthcare professional. Precautions If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use. Use only if safety seal is intact. Food supplements should not be used as a substitute for a varied diet. Do not exceed the stated daily dosage. Keep out of the reach of young children.