Generally, American ginseng does not cause headache under normal use. If headache occurs, it is recommended to ask your doctor to find out the specific cause of headache. Radix Panax Ginseng is the root of Panax Ginseng in the family of Ginseng, which is cool in nature, sweet in taste and slightly bitter in flavor, and has the functions of tonifying qi and nourishing yin, clearing heat and generating fluids. It is suitable for the treatment of deficiency heat, coughing, asthma, phlegm and blood, internal heat and thirst (internal fever accompanied by symptoms such as eating more, drinking more and urinating more), and dry mouth and throat, etc. It is also suitable for the treatment of cold and dampness, which can cause headache. It should be used with caution for those who are obstructed by cold and dampness. There is no study to show the toxic side effects caused by American ginseng. If headache occurs after using American ginseng, it is necessary to clarify whether it is symptomatic or not in the first place. In addition, other causes such as excessive fatigue, cervical spondylosis, emotional disorders, etc. can occur headache, it is recommended to consult a doctor to identify the causes under the guidance of the doctor, and active treatment.