Side effects of Omeprazole Sodium Enteric Coated Tablets include headache, diarrhea, constipation, abdominal pain, nausea, vomiting and bloating, increased serum aminotransferases (ALT, AST), rash, vertigo, drowsiness and insomnia. Omeprazole sodium enteric-coated tablets are mainly used for the treatment of gastric or duodenal ulcer, reflux esophagitis and gastrinoma, this product can also treat mild gastric ulcer. Omeprazole sodium enteric-coated tablets are contraindicated in patients who are allergic to the components of omeprazole sodium enteric-coated tablets, used with caution in patients with hepatic or renal insufficiency, used with caution in lactating women, and not to be taken by those with glucose intolerance. It is best to take omeprazole sodium enteric-coated tablets on an empty stomach, swallowed whole, not chewed or crushed, more than 3 years of taking this product can cause vitamin B12 malabsorption, it is recommended that vitamin B12 supplementation.High-dose administration and long-term treatment of people with osteoporosis risk, it is recommended that more calcium supplementation. If you need to use omeprazole sodium enteric-coated tablets, please consult a professional doctor, follow the doctor’s instructions, and rational use of medication.