What channels can I buy genuine Polygonum multiflorum at a reasonable price?

You can buy Polygonum multiflorum in supermarkets. Polygonum multiflorum is bitter, sweet, astringent and slightly warm. Returns to liver and heart. The effects are: detoxification, elimination of carbuncle, treatment of malaria, moisturizing intestines and laxative. The main component is anthraquinone compounds. Pharmacological effects include: lowering blood lipids and anti-atherosclerosis; anti-inflammatory and analgesic; anti-genetic damage; enhancing immune function and delaying aging, etc. Polygonum multiflorum has a diarrheal effect and should not be taken by those with loose stools.