Diabetes is a metabolic disease, that is, there is a problem with the regulation and utilization of sugar in the body, causing the concentration of glucose in the blood to increase and the value to change within a wide range. The main symptoms are as follows: 1) Eating too much and often feeling hungry. Because the ability of diabetic patients to secrete or utilize insulin is reduced, sugar in the body cannot be catabolized and is excreted in the urine. Patients are usually more likely to feel hungry; 2) Polydipsia and polyuria. If the blood sugar concentration is too high, it will cause the intravascular pressure to increase, stimulating the brain to produce a feeling of hunger and thirst, prompting the patient to drink more, and subsequently causing increased urine secretion; 3) Weight loss and fatigue easily. Although the appetite is larger than usual, glucose cannot be fully utilized, causing some patients to lose weight instead of rising, and even suffer from weight loss, general weakness and listlessness; 4) Vision loss. Long-term high blood sugar may cause diabetic retinopathy, affecting the patient's vision, causing vision loss and blurred vision.

When symptoms of diabetes appear, you need to see a doctor in time. Most people with diabetes still need to take medication, mainly oral hypoglycemic drugs and insulin injections. Insulin is a common drug for the treatment of diabetes. According to the duration of drug effect, it can be divided into short-acting (such as insulin aspart), medium-acting (such as protamine zinc recombinant human insulin) and long-acting (such as insulin glargine), as well as mixed preparations. Insulin is also divided into original drugs and generic drugs. For example, the original insulin aspart mentioned earlier is produced by Novo Nordisk, and the original insulin glargine is produced by Sanofi. There are also many generic drug brands. Insulin is a biological agent, which is more difficult to replicate accurately than traditional chemical agents. Different brands may have differences in clinical trials, production processes, excipients, and impurities. Therefore, you should follow your doctor's advice when choosing medication.