Quercetin is a water-soluble bioflavonoid. It is a potent natural antioxidant. It is a plant pigment found in the skin of red apples and red onions. Epigenar Quercetin capsules contain 400mg Quercetin, derived from the seeds of the Dimorphandra mollis tree, in a vegetable capsule shell. Directions: 2 capsules once daily. Maximum 4 capsules daily, unless otherwise advised. Not suitable for children under 5 years of age. Ingredients (per 2 vegicaps): Quercetin, Filler (Rice Starch), Hydroxypropylmethyl Cellulose (capsule shell). Gluten-free and vegetarian.