Ester-C Absorption: Ester-C & Flavonoids is a form of vitamin C providing superior absorption and retention for immune support, making it a potent antioxidants supplement* | Antioxidants: Bioflavonoids quercetin and rutin, as part of our antioxidants supplement, helps to support your immune system and antioxidant defenses* | Immune Support: Ester C supports a healthy immune system and cell function, an essential part of your immune and antioxidants supplement routine* | Suggested Use: As a dietary supplement, take 1 Ester C immunity capsule, 1-2 times daily, with or between meals | Pure Difference: What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs