Yianning Pill is a kind of tonic Chinese medicine, made of more than ten Chinese herbs such as Radix et Rhizoma Ginseng, Panax Ginseng, Cordyceps Sinensis, Salviae Sinensis and Safflower, etc. It can treat chest tightness and shortness of breath, coldness and coldness in the limbs, numbness in the hands and feet caused by deficiency of qi and blood, liver and kidney, and also has certain effect on insomnia and forgetfulness, fatigue and weakness in the waist and knees. Yianning Pill is usually taken twice a day, morning and evening, before breakfast or 30-60min before bedtime, and is usually effective within a week. A course of treatment, the time varies from 15 days to 3 months. It is a medicine with three toxins, this time the toxicity refers to the bias of the action of the Chinese medicine, such as cold, hot, warm, cool, from the perspective of modern pharmacology, is the pharmacological action and physiological activity. Therefore, it cannot be considered that tonic herbs are non-toxic herbs, and certainly not simply equivalent to nutrients. For normal people or people with symptoms that do not match, the short-term application of tonic herbs may not be a big problem, but long-term use may produce many toxic side effects. The selection of proprietary Chinese medicine should be based on the theory of Chinese medicine, the evidence of the disease, and the use of medicine. If patients know less about Chinese medicine, they should choose OTC Chinese medicines according to the prescriptions of Chinese medicine practitioners, so as not to lead to blind use of medicines without identification.