Gastrozine is also known as Compound Aluminum Hydroxide Tablets. Aluminum hydroxide tablets and omeprazole have the same effect, but with different ingredients, different usage and different adverse reactions. Omeprazole is a proton pump inhibitor, mainly inhibits gastric acid secretion. Aluminum hydroxide tablets are antacids, which can neutralize gastric acid and inhibit gastric acid secretion at the same time. The main differences between the two drugs are: 1. Different ingredients: Aluminum hydroxide tablets are composed of aluminum hydroxide, magnesium trisilicate and belladonna infusion. Omeprazole is mainly composed of omeprazole. 2. Different usage: Compound aluminum hydroxide tablets are usually 2-4 tablets for adults at one time, 3 times a day. Chew and take half an hour before meal or during stomach pain attack. Omeprazole needs different usage and dosage depending on the disease being treated. 3. Adverse reactions are different: compound aluminum hydroxide tablets long-term high dose, can cause serious constipation, fecal agglomeration caused by intestinal obstruction; long-term use of the elderly, can lead to osteoporosis; renal insufficiency patients take, may cause blood aluminum rise. Omeprazole can appear headache, diarrhea, nausea, vomiting, constipation, abdominal pain and bloating and other adverse reactions. The above drugs should be taken under the supervision of a physician.