The use of cuttlebone for gastritis can generally reflect the efficacy in about 2 weeks, but the specific duration of medication varies from person to person and cannot be generalized. Cuttlebone is a traditional Chinese medicine tablet with the function and efficacy of astringent to stop bleeding, astringent to stop banding, acid control and pain relief, commonly used in the treatment of vomiting blood, nosebleeds, bleeding from trauma, neutralizing stomach acid, gastric ulcer and other conditions. Cuttlebone can treat stomach discomfort caused by excessive stomach acid, but it should be used under the guidance of a traditional Chinese medicine doctor and can be applied with some other herbs for more obvious efficacy. Generally, the effect can be seen in about 2 weeks after taking the medicine. During the period of taking cuttlebone, liver and kidney functions should be monitored, if nausea, vomiting, diarrhea, jaundice, weakness, poor appetite and other symptoms appear, should be immediately discontinued, serious cases need to promptly go to the gastroenterology department for consultation. During the period of taking cuttlebone, it is recommended to eat a light diet, avoid eating spicy, greasy and stimulating food, and eat more fresh vegetables and fruits.