6 hours.

Astragalus can be stored in a thermos cup for 6 hours. If astragalus is left in the thermos cup for too long, it will cause bacteria to multiply and easily cause gastrointestinal reactions after drinking. Moreover, a large amount of acidic substances are dissolved during the cooking process of traditional Chinese medicine. If left for a long time, the acidic substances will chemically react with elements such as cadmium and nickel on the inner wall of the thermos cup. These heavy metal elements will then dissolve into the traditional Chinese medicine decoction, which can treat It produces toxic effects on the human body and is detrimental to the body.

Astragalus is the dried root of the leguminous plant Astragalus mongolica or Astragalus membranaceus. Astragalus has a sweet taste and slightly warm medicinal properties. Returns to the lung and spleen meridians. The main components of Astragalus include triterpene saponins, flavonoids, polysaccharides, amino acids, etc.