Since 1972. Standardized fluid extract. Supports a healthy immune system. Discover Nature’s answer. Lowest 12-15% organic alcohol (12-15% by volume Certified Organic Alcohol). Bio-Chelated cold extraction process. Our alcohol extracts are produced using our cold Bio-Chelated proprietary extraction process, yielding a Holistically Balanced Advanced Botanical Fingerprint extract in the same synergistic ratios as in the plant.