Can American ginseng, wheat winter, and chrysanthemum be steeped in water for drinking?
Generally speaking, American ginseng, Ophiopogon root, and chrysanthemum can be consumed as herbal teas, but should be taken in appropriate amounts under the guidance of a TCM practitioner. Detailed explanations are as follows:

American ginseng has functions including nourishing yin and replenishing vital energy (Qi), clearing internal heat, and promoting production of body fluids. Ophiopogon root nourishes yin and moistens the lungs, and also benefits the stomach and promotes production of body fluids. Chrysanthemum dispels wind and clears heat, and calms the liver to improve vision. When these three herbs are combined in a tea, they can provide multiple benefits including nourishing stomach yin, promoting production of body fluids to relieve thirst, moisturizing the lungs and calming the mind. They can also work synergistically to improve symptoms such as excessive internal heat due to yin deficiency and dry, irritated eyes.
However, both American ginseng and Ophiopogon root are relatively cool in nature and may burden the spleen and stomach, potentially causing diarrhea, abdominal pain, and other symptoms. Additionally, chrysanthemum is cold in nature, and excessive consumption may also cause diarrhea. People with cold deficiency of the spleen and stomach, diarrhea, or indigestion should avoid excessive consumption of teas made from American ginseng, Ophiopogon root, and chrysanthemum. Herbal combinations should be tailored to individual needs; therefore, it is recommended to consult a TCM practitioner before consumption to determine suitability based on one's body constitution.
In daily life, it is recommended to maintain healthy lifestyle habits, including regular sleep patterns and moderate exercise, which help support overall health.