Cuttlebone has the effect of tonifying the kidneys and aiding the yang, consolidating semen and urine (consolidating semen and urine and preventing random leakage), and is usually taken by the simple method of decoction. Cuttlebone is made from the dried egg sheaths of the giant axe mantis or the great knife mantis. Cuttlebone is sweet, salty and flat in nature, and can enter the liver and kidney meridians, with the effect of tonifying the kidney and assisting the yang, fixing the essence and shrinking the urine. It can be used to treat urination and frequent urination, spermatorrhea, and urinary turbidity (cloudy urine like white pulp) and other diseases. Cuttlebone should be stored in a dry and ventilated place, and should be careful to prevent moth. Cuttlebone is usually taken by decoction. The adverse effects of cuttlebone are not known, but it is not recommended for people with yin deficiency and fire exuberance (deficiency of yin and essence in the body with hyperactivity of deficiency fire) and people with heat in the bladder. Cuttlebone should be taken under the guidance of a TCM doctor, not blindly on its own.