The correct way to make water with plantain is to take some plantain and brew it in boiling water for more than 10 minutes or add cold water and boil it and drink it. Psyllium is a traditional Chinese medicine, the dried whole herb of Plantago ovata, family Plantagoceae, when used, it needs to be brewed with boiling water to stimulate the active ingredients, or boiled for 5 minutes in the traditional Chinese medicine decoction way, and then left to cool and take. After brewing, the water color of Plantago Ovata appears clear and light yellow with a slight fragrance. Psyllium is sweet and cold in nature, with the effects of clearing heat and diuresis, cooling the blood and detoxifying the toxin (referring to the treatment of blood-heat and toxin accumulation). It can be used for heat knotting in the bladder, dysuria (unruly urine), gonorrhea (cloudy urine and leukorrhea), summer-dampness diarrhea and dysentery, epistaxis, blood in urine, liver-heat, eye-bleeding, sore throat, carbuncle, swelling, and poisonous sores, and other conditions. It should be noted that the plantain is very easy to deteriorate after brewing, should be consumed as soon as possible. And plantain is sweet and cold in nature, so it is forbidden to take it for those who are weak and slippery. If you need to use this product, should be under the guidance of a physician, do not blindly use their own medication, so as not to cause adverse reactions.