Yellow dock is considered one of the best overall blood purifiers. Yellow dock extract's rich iron content helps to enrich blood quality, and provide important vitamins and minerals, more than any other plant. As such, the herb is often recommended for iron deficiencies. It is also high in bio-flavonoids, which help to strengthen capillaries. Yellow Dock cleanses the system and helpsrelieve virtually all disorders associated with impurities in the blood, which in turn addresses skin disorders such as acne, boils, fungal infections, and dermatitis. Disclaimer: These statements have not been evaluated by the FDA and are not intended to diagnose, cure, treat or prevent disease. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.