1. Diabetics who are relying on insulin should not use the oral antidiabetic medicines in a onefold way, however, they can take some medicines complemented with insulin.
2. The effects of antidiabetic medicines in patients who have acute complications of Diabetes are bad, such as infection, diabetic ketoacidosis, and hyperosmolar nonketotic diabetic coma. Sometimes the medicines can cause lactic acidosis, so the patients had better not use the medicines.
3. Diabetics with severe chronic complications, especially those with stage 3 or severe disease, are recommended to use insulin instead of antidiabetic medicines to treat the disease.
4. If the patients have some other acute diseases such as myocardial infarction, operation, as well as trauma, they can use insulin temporarily.
5. All of the pregnant women who are with Diabetes should stop taking the oral antidiabetic medicines to avoid the unstableness of the blood sugar and the abnormalness of the fetus. Also, the lactational mothers are not allowed to take the medicines since the drugs can get into the fetus via breast milk.
