Sea snail should be cuttlebone; this product has the efficacy of astringency and stopping bleeding, astringent and stopping the band; the side effects are not yet clear. Cuttlebone belongs to traditional Chinese medicine, for the squid family animal needleless squid or golden squid dry inner shell, it tastes salty, astringent, warm, to the spleen, kidney meridian, the traditional Chinese medicine can astringent stop bleeding (with astringent effect of the drug to treat bleeding disease), but also astringent to stop the belt, and have the effect of acid and astringent sores. Cuttlebone can be used internally for acid swallowing (swallowing the acid that rushes up from the stomach to the mouth and throat), epistaxis, hematochezia, spermatorrhea, and leucorrhoea; externally, it can also be used to treat bleeding from wounds, eczema and eczema sores. Adverse reactions and contraindications of cuttlebone are not clear at present; caution should be exercised in cases of yin deficiency and hyperthermia. If you need to use the drug, should be used under the guidance of a traditional Chinese medicine practitioner to identify the evidence, not to buy their own medicine to avoid delaying the condition of the medicine is not the right evidence.