Gliclazide tablets and gliclazide extended-release tablets are both medications used to lower blood sugar, and both have similar effects. The difference between gliclazide tablets and gliclazide extended-release tablets is that the extended-release tablets are longer lasting than ordinary tablets in terms of time to release the efficacy of the drug, and will not be like ordinary tablets, once in the patient’s body to be completely released, through the slow-release way to reduce the stimulation of the gastrointestinal tract, to play a certain protection of gastrointestinal tract, mostly used for local stimulation of the larger drugs. Gliclazide is mainly suitable for patients with type 2 diabetes mellitus, and can control the blood glucose of patients with type 2 diabetes mellitus in the fasting state during the period of taking the medicine. And this medicine also has a certain effect on reducing blood sugar after meals in patients with type 2 diabetes mellitus. The side effects of Gliclazide are allergic reactions and gastrointestinal reactions. It is contraindicated in people who are allergic to this product. They usually disappear after stopping the drug, but if the symptoms are noticeable it is recommended to consult a doctor in time. The drug is a prescription drug and should be used in strict accordance with medical advice.