What are the Chinese medicines for yin and yang?

There are many kinds of proprietary Chinese medicines to replenish both yin and yang, such as Ginseng and Antler Kidney Supplement Tablets, Turtle and Deer Erxian Ointment, etc., which need to be used under the guidance of physicians. 1. Ginseng and Antler Kidney Supplement Tablets: It is a proprietary Chinese medicine, which is composed of antler, eucommia, cinnamon and so on. It has the effect of tonifying the kidney and strengthening the yang (tonifying the kidney yang), benefiting the qi and nourishing the blood (replenishing the qi and blood in the body). It has therapeutic effect on the deficiency of yin and yang, with symptoms visible as impotence, dreaming and slippery semen, and fatigue. Its adverse effects, contraindications, precautions are not clear. 2. Tortoise and Deer Erxian Cream: It is a kind of Chinese patent medicine, which is composed of tortoise shell, deer antler and ginseng, etc. It has the efficacy of warming the kidney and benefiting the essence, tonifying the qi and nourishing the blood. It is used for lumbar and knee impotence and weakness caused by kidney deficiency and essence deficiency. Adverse reactions are not clear. Contraindication is contraindicated for pregnant women and children. Precautions, caution for people with weak spleen and stomach; not to be combined with cold and flu medicines. Chinese medicines or proprietary Chinese medicines need to be used under the guidance of traditional Chinese medicine practitioners, individuals should not use blindly, so as not to cause adverse effects.