Patients with type 1 and type 2 diabetes after 5 units of insulin are not recommended to stop using it on their own if they do not have obvious adverse reactions. Insulin has the effect of lowering blood sugar, can be used to treat type 1 diabetes, after oral hypoglycemic drugs and dietary control is ineffective in type 2 diabetes and other diseases; insulin allergy, hypoglycemia, cirrhosis of the liver, acute hepatitis, nephritis and other diseases are prohibited. Hypoglycemia, subcutaneous fat atrophy, hard nodules, surface redness and other adverse reactions may occur after use. For type 1 and oral hypoglycemic drug treatment is ineffective for type 2 diabetes mellitus, if there is no obvious adverse reaction after injection is not recommended to stop insulin treatment without authorization, once stopped insulin treatment blood glucose may rise again, long-term poor glycemic control may induce diabetic nephropathy, diabetic foot and other serious complications. If you are not sure whether you can stop taking insulin after 5 units, it is recommended that you go to the hospital and ask the doctor to make a judgment based on the specific situation.