Cuttlebone is the traditional Chinese medicine cuttlebone, with astringent hemostasis (using drugs with astringent effect to treat bleeding disorders), astringent stopping bandages, acid suppression and pain relief (inhibiting gastric acid and alleviating pain), collecting dampness and astringent sores (reducing the invasion of dampness and promoting the healing of sores) and other effects, patients with deficiency of yin and fire, and patients with constipation are prohibited from taking it. Cuttlebone is salty, astringent, warm in nature, belonging to the spleen and kidney meridian, it has the efficacy of astringency and stopping bleeding, astringent essence and stopping bandage, checking acid and stopping pain, collecting dampness and converging sores, etc. It can be used for vomiting hematemesis, epistaxis, leakage of menstruation (menstruation with excessive amount or more than a few drops), blood in the stool, seminal emission and slippery spermatozoa, reddish leucorrhoea (abnormal white belt with blood or blood clots), stomach ache and acid swallowing (swallowing the acid in the stomach that is upwardly charged to the mouth and pharynx). Cuttlebone can also be used externally to treat bleeding injuries, eczema and wet sores, ulcers do not converge. This product should not be taken by those who are weak in yin and more hot, and it is easy to cause constipation if taken for a long time, so it can be used with laxative medicines as appropriate. If you need to use cuttlebone, please under the guidance of a professional physician to identify the evidence, do not self-medication, so as not to affect your health.