There is no basis for the claim that how to regulate the yin and yang deficiency is the most effective. Yin and yang deficiency is often regulated by the use of medicines such as tonic day Dazao Pill, tortoise and deer Erxian cream, tortoise and astragali ginseng oral solution, and so on. 1. tonic day big make pill: has the effect of nourishing the vital energy, but also can prolong life and strong Yang Yuan. It can be used to treat diseases such as deficiency and fatigue as well as five labors and seven injuries. Contraindications and precautions are not clear. 2. Turtle Deer Erxian Cream: It has the effect of warming the kidney and benefiting the essence (warming the yang qi of the kidney and benefiting the essence of the kidney), as well as tonifying the qi and nourishing the blood. It is used for the evidence of kidney deficiency and essence deficiency, manifested as lumbar and knee soreness and weakness (a feeling of soreness and weakness in the lumbar region and knees). Not recommended for pregnant women and children. 3. Turtle Astragalus Ginseng Oral Liquid: It has the effect of benefiting qi and nourishing blood (replenishing qi and blood in the body), as well as nourishing yin and aiding yang. It is used for symptoms of deficiency of qi and blood as well as deficiency of yin and yang, manifesting as palpitation (rapid heartbeat, often accompanied by panic), shortness of breath, fatigue (mental exhaustion, physical weakness), lack of food and tiredness, lumbar and knee soreness, as well as dizziness and ringing in the ears, etc. It is contraindicated for pregnant women and children. It should be noted that it is contraindicated in pregnant women and prohibited in children. Before taking the above medicines, it is necessary to be guided by a doctor for identification, and not to take medicines on your own, so as not to cause adverse consequences to the body.