Niu Knee is effective in tonifying the liver and kidneys, diuretic and diaphoretic (improving the problem of dribbling in urine, small amount of urine and inability to pass), and can be used for treating lumbar and knee pain, weakness of muscles and bones, and so on. Huai Niu Knee is the prescription name of Niu Knee, which is the dried root of Niu Knee of Amaranthaceae family. It belongs to the liver and kidney meridians, and has the efficacy of expelling blood stasis and clearing the meridians (removing blood stasis and clearing the meridians), tonifying the liver and kidneys, strengthening the muscles and bones, diuretic and diaphoretic, and inducing the blood to flow downward. This drug can be used in the treatment of menorrhagia, dysmenorrhea, lumbar and knee pain, weakness of muscles and bones, gonorrhea (increased frequency of urination, drenching and astringent pain), edema, headache, vertigo, toothache, mouth sores, vomiting blood, epistaxis. The adverse effects of this product are not clear, pregnant women should be cautious of using this product. If you need to use this drug, you need to consult a professional Chinese medicine practitioner, do not blindly use the drug on your own.