Herb Pharm Yellow Dock Liquid Herbal Extract Description. Liquid Herbal Extract. Rumex Crispus. Whole Root. We prepare our Yellow Dock extract from the roots of Rumex crispus plants which are Certified Organically Grown without the use of chemical fertilizers pesticides or herbicides or are Custom Wildcrafted in their natural wild habitat. To assure optimal extraction of Yellow Docks bioactive compounds the roots are hand-harvested only after the plants have fully seeded in late summer or early autumn and are then carefully shade-dried and thoroughly extracted. Our Yellow Dock is never fumigated or irradiated. Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose treat cure or prevent any disease. Shake well before using. Two to five times per day take 30 to 40 drops in a little water. Ingredients: Certified organic grain alcohol distilled water vegetable glycerine and yellow dock extractives.