Under normal circumstances, the length of continuous dosing of Ota Stomach San should not exceed 3 days. Ota Stomach San is used to treat stomach pain after drinking, acid reflux and burning, and accumulation of food in the stomach and intestines. Long-term or excessive use of Ota Gastric San can have adverse effects on the digestive system and may even lead to drug dependence and addiction. The main ingredients of Ota Stomach San are sodium bicarbonate, magnesium carbonate, fennel, chenopodium and other herbal ingredients. However, long-term or overdose may cause too little stomach acid and intestinal spasm, which may lead to nausea and vomiting, loss of appetite and other adverse reactions. In addition, as a mucosal protective agent, long-term use of Ota Gastric San may cause a decrease in the immune system of the digestive system, making it more susceptible to infection by allergenic bacteria and causing digestive system diseases.