Also known asRumex crispus, curled dock, garden patience, narrow dock, and sour dock.IntroductionYellow dock has long curly leaves that appear to have been “crisped”at their edges. It bears multiple clusters of three-winged flowers. Itsseeds are green in the summer but they become deep red as they mature.The root of yellow dock bright yellow below the bark. The root is thepart of the plant used in herbal medicine, harvested in late summerafter the seeds have begun to turn red.ConstituentsEmodin, magnesium, nepodin, oxalic acid, selenium, silicon, sodium, tannins.Parts UsedDried root, chopped.Typical PreparationsTraditionally used as a tea or tincture, and may be taken in capsule form.PrecautionsIf you experience cramping, you’ve taken too much. Start with thesmallest recommended dose (usually 6 grams or 3 rounded teaspoons a day)and increase dosage slowly until you get the desired effect. Unlikesmall doses of rhubarb, small doses of yellow dock are not constipating.Don’t take yellow dock or any other stimulant laxative if you takeLasix (furosemide); the combination can lead to potassium depletion. Notknown to be safe during pregnancy, although no complications have everbeen reported. Not recommended for use while suffering from Kidneystones.For educational purposes only This information has not been evaluated by the Food and Drug Administration.This information is not intended to diagnose, treat, cure, or prevent any disease.