Polygonum multiflorum Thunb has obvious effects of nourishing liver and kidney, nourishing essence and blood, strengthening bones and muscles, blackening hair, calming nerves and quenching thirst. This is undeniable, but many people have questions: Is Polygonum Multiflori Radix poisonous? How to eat? Bian Xiao told everyone how to eat Polygonum multiflorum Thunb today. According to the analysis of medicinal components of Polygonum multiflorum Thunb, we know that Polygonum multiflorum Thunb has certain toxic side effects, mainly because it contains anthraquinones and other toxic components, such as rhein, chrysophanol, emodin and physcion. If you take too much, it will stimulate the gastrointestinal tract and cause symptoms such as bowel sounds, nausea, abdominal pain, diarrhea and vomiting. In severe cases, paroxysmal tension spasm, restlessness, convulsions and even respiratory paralysis may occur. Therefore, taking Polygonum multiflorum Thunb alone should be taken according to the doctor's advice. China Pharmacopoeia clearly states the processing of Polygonum multiflorum Thunb: "Nourish liver and kidney, benefit essence and blood, blacken hair and strengthen bones and muscles. It is used for blood deficiency and chlorosis, dizziness and tinnitus, premature graying of hair, soreness of waist and knees, numbness of limbs, metrorrhagia and leukorrhagia, neurasthenia, long-term illness and hyperlipidemia. " Polygonum multiflorum Thunb has such a great effect, how to eat it to avoid side effects and play a health care role? The most commonly used method is to make Polygonum multiflorum Thunb. Radix Polygoni Multiflori Preparata can reduce toxicity. The following small series introduces two methods of processing Polygonum multiflorum Thunb. : 1. Brewing: (1) Take Polygonum multiflorum Thunb. Slice or block, mix with yellow wine, moisten for 4-6 hours, steam in a steamer for 6 hours, take it out and dry it a little, then put it in a pot for juicing. When the juice is exhausted, take it out and steam again, take it out and dry it or dry it at the degree of steaming black. (2) Take Polygonum multiflorum Thunb, add wine and water, mix well, slice and dry. Each Polygonum multiflorum 10kg, 2kg of white wine. 2. Preparation of Radix Rehmanniae Preparata: Dilute the juice of Radix Rehmanniae Preparata with water, add Polygoni Multiflori Radix, fully moisten, steam for 3-5 hours, and air dry; Steam repeatedly, cool for 3-5 times, and dry in the sun. 500 grams of Polygonum Multiflori Radix and 60 grams of Radix Rehmanniae Preparata juice.