Vitality Source Oral Liquid can be taken directly by mouth, according to its instructions usually take 2 to 3 times a day, once with 20ml. Vitality Source Oral Liquid is a proprietary Chinese medicine containing the Chinese medicinal ingredients ginseng stem and leaf saponin, astragalus, schizandra, maitake and epiphyllum, which can benefit qi and nourish yin (replenish qi and yin fluids), strengthen the heart and benefit the kidneys. Vitality Source Oral Liquid is suitable for symptoms such as forgetfulness, insomnia and memory loss caused by deficiency of qi and yin (deficiency of both qi and yin), deficiency of heart and kidney. It can also be used by patients with coronary heart disease, chronic hepatitis, diabetes mellitus and menopausal syndromes if the above symptoms are seen. The instruction manual of this product clearly states that this product is suitable for oral administration, and it needs to be taken 20 ml at a time and 2 to 3 times in a day. It should be noted that the adverse reactions and contraindications of this product are not clear, but this product is a prescription drug, the specific use should be carried out under the guidance of a physician or pharmacist, do not use it indiscriminately, in order to prevent adverse consequences.