Mesalazine extended-release tablets can be taken before or after meals. Mesalazine extended-release tablets belong to the western medicine, the nature is with light brown spots of off-white to light brown tablets, the indications include the acute phase treatment of ulcerative colitis, the maintenance treatment of preventing recurrence; active Crohn’s disease symptomatic improvement of the treatment. It is not recommended to use the drug privately, so as not to have the right medicine or improper control of the dosage. The instruction of the drug is not strictly limited, can be taken before meals, can also be taken after meals, the clinical did not find that the time of taking the drug will affect the efficacy of the drug. However, it should not be chewed and taken, and should be broken or put into suspension in water and then drunk. And when taking mesalazine extended-release tablets, you need to strictly follow the doctor’s instructions, not to change the dosage of the drug. Adverse effects of mesalazine extended-release tablets include diarrhea, nausea, abdominal pain, headache and so on. Contraindications to mesalazine extended-release tablets are hypersensitivity to the product, salicylates, etc.; severe hepatic and/or renal insufficiency; gastric or duodenal ulcers; children under the age of 2 years; and women during pregnancy should be used under strict evaluation by a doctor. Mesalazine should be used only as prescribed by a doctor and should not be taken on its own.