Brand from United States: Nature's Way. DESCRIPTION: 1 m L delivers 100 mg of extract derived from 6, 400 mg of premium cultivar elderberries. 10x more elderberry extract per m L than Nature s Way Sambucus syrup formulas. From unique cultivar black elderberries with higher levels of naturally occurring flavonoids. Solvent-free extract standardized to flavonoids (anthocyanins). Extract tested for bioavailability & activity within the body. Direction: Add to water or take directly. For Daily Maintenance: Adults: Take 1 m L (25 drops) daily. Children: Take 0.5 m L (13 drops) daily. For Intensive Use: Adults: Take 1 m L (25 drops) four times daily. Children: Take 0.5 m L (13 drops) four times daily.