People injecting insulin regularly are prescribed to keep with the special portable machine for checking the blood glucose levels at regular intervals. It is important to monitor blood glucose levels as insulin is injected directly into the skin so the patient should monitor blood levels of glucose cautiously as well. Insulin undoubtedly helps a person to live-action but it has some serious side effects as well. Over injection of insulin can lead to sudden hypoglycemia, nausea, sweating. Patients in such cases need immediate help from the primary care physician near You. Thus people taking insulin need excessive care in the diet as well as insulin administration both.