The shelf life time of American ginseng tablets varies according to varieties and treatments, usually the shelf life is in the role of 2 years, it is specifically recommended to use under the guidance of professional medical practitioners. American ginseng tablets are slices of American ginseng with sweet and bitter taste and cool nature. It has the effects of benefiting lung yin, clearing deficiency fire, generating fluids and quenching thirst (promoting the production of fluids to quench thirst), and can be used for the treatment of deficiency of qi and yin, internal heat, thirst, coughing and wheezing, phlegm and blood, deficiency heat, boredom, dry mouth and throat, and other symptoms. The shelf life of American ginseng tablets is generally 2 years if sealed and properly stored, and should be taken within the shelf life as far as possible. It should be taken within the shelf life as far as possible. If there is mold and deterioration, it should not be taken. It should be noted that it is contraindicated for people with Yang deficiency. After taking it, there may be chills, loss of appetite, diarrhea and other adverse reactions, you should go to the hospital as soon as possible. In addition, avoid eating spicy and stimulating, greasy food during the period of taking. All the above medications should be used under the guidance of a doctor, avoid self-medication.