For centuries the dark berries of European black elder (Sambucus nigra L.) have been traditionally used as a winter remedy for immune support.*Nature's Way Standardized Sambucus is the superior black elderberry extract.Premium ElderberriesMade with our unique, full-spectrum black elderberry extract that is from a unique blend of black elderberries that are naturally richer in Flavonoid BioActivesSuperior QualityOur elderberry extract has been tested for bioavailability and shown to be active within the bodyProduct is made with a gentle, solvent-free extraction method that ensures maximum flavonoid potency