1g of radix aconiti lateralis preparata, 3g-45g of radix codonopsis, 15g of radix glycyrrhizae, 12-16g of dried ginger, 3g-45g of poria cocos, 3-35g of perilla leaf and 1g-2g of rhubarb. How much water is used to decoct this prescription? Analysis of illness: This prescription needs to be decocted for half an hour first. First, soak the medicine in cold water for 1 hour, then decoct the aconite first. After boiling the water for half an hour, add other medicines and decoct for about half an hour, which can effectively reduce the toxicity of the aconite. < br/> Suggestions: There is no need to add water in the process of decocting medicine. At last, about 2ml of water will be left. Drink it twice, about 1ml each time.