USDA With Flavonoid BioActives Dietary Supplement Certified Gluten-Free Kosher Certified Sweetened with Agave Syrup Certified by Quality Assurance International Delicious Taste Berry Flavor For Children & Adults Measuring Cup Included About Black Elderberry For centuries the dark berries of European black elder (Sambucus nigra L.) have been traditionally used as a winter remedy. Premium Elderberries Made from a unique cultivar of black elderberries with a higher level of naturally-occurring flavonoids. Standardized BioActives Full-spectrum black elderberry extract standardized to anthocyanins, which are potent flavonoid BioActives. Produced with a gentle, solvent-free extraction method that ensures maximum flavonoid potency. Tested for Bioavailability Our elderberry extract has been tested for bioavailability and activity within the body.