The effects of cuttlebone are astringent and hemostatic (treating bleeding disorders with medicines that have astringent effects), astringent and stopping bandages, and collecting dampness and astringing sores, etc. It has the effect of treating epistaxis (vomiting blood and epistaxis), metrorrhagia (excessive menstrual flow or dribbling), blood in the stools, spermatorrhea, and spermatorrhea, and other disorders. The side effects of the drug are not clear. This drug is the dried inner shell of the needleless squid or golden squid of the squid family. It is salty, astringent and warm in nature, and belongs to the spleen and kidney meridians. It has the efficacy of astringent and stopping bleeding, astringent and stopping leucorrhoea, suppressing acid and relieving pain (inhibiting gastric acid and relieving pain), and collecting dampness and astringing sores, and can be used in treating epistaxis and vomiting of blood, disintegration and leucorrhoea, seminal emission and slippery semen, aberration of leucorrhoea with blood in it, and gastric pain and swallowing of acid. The adverse reactions and contraindications of this drug are not known. If necessary, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a professional physician for evidence-based treatment.