Mesalazine enteric-coated tablets are commonly used in ulcerative colitis and Crohn’s disease, etc., ranging from 0.5 grams to 1 gram each time, swallowed whole 3-4 times a day, depending on the clinical indications, and must be taken in accordance with medical advice. Mesalazine enteric-coated tablets is a prescription drug, the specific dosage of prescription drugs need to be diagnosed by a physician to decide, because prescription drugs for different diseases, conditions, personal constitution, the dosage of medication is different, the patient must be in the physician’s diagnosis and guidance to take, to avoid due to the use of medication to avoid adverse consequences, delayed the condition. For acute attacks of ulcerative colitis, usually 4 times a day, 1 gram each time, maintenance treatment 3 times a day, 0.5 grams each time; for segmental ileitis, 4 times a day, 1 gram each time, can be swallowed directly whole, not recommended to chew or crushed, such as leakage of the dose should be made up as soon as possible or taken at the same time with the next dose. Liver and renal insufficiency should be used with caution, elderly patients should reduce the amount of discretion, allergic to salicylic acid drugs and this product is prohibited; it is recommended that patients take before meals, fasting state can be better absorption of the product, such as taking after meals, need to be more than half an hour interval with the meal time.