Yin deficiency is not recommended to take Anshen Tonic Oral Liquid. Yin deficiency will manifest as dizziness, hot flashes, warm hands and feet, night sweating (abnormal sweating after going to sleep and stopping after waking up) and other symptoms. It needs to be regulated by yin nourishing drugs to treat the symptoms. Tranquilizing Spirit and Nourishing Brain Oral Liquid has the effect of generating essence and tonifying marrow, benefiting qi and nourishing blood (replenishing qi and blood in the body), and strengthening brain and tranquilizing spirit. It is used for the treatment of dizziness, fatigue, forgetfulness and insomnia caused by insufficient kidney essence and deficiency of qi and blood. It does not have the effect of nourishing Yin and cannot be used in the treatment of Yin deficiency. It is not suitable for people with yin deficiency constitution or with yin deficiency condition. Yin deficiency patients are recommended under the guidance of a doctor to identify the evidence and then choose the appropriate medication to regulate the symptoms, do not self-medication, so as not to delay the condition.