Insulin is a type of hormone produced by your pancreas. It helps your body store and use the carbohydrates found in food.

If you have type 2 diabetes, it means your body doesn’t use insulin effectively and your pancreas isn’t able to compensate with enough insulin production. As a result, you might have to use insulin therapy to prevent your blood sugar from getting too high.

The likelihood of having to use insulin for blood sugar control increases with the duration of diabetes, especially over 10 years. Many people start off on pills but eventually progress to insulin therapy. Insulin can be used by itself as well as in combination with other diabetes treatments.

Keeping your blood sugar in a healthy range is vital to your overall well-being. It can also help lower your risk of complications, such as blindness, kidney disease, amputations, and heart attack or stroke.

If your doctor tells you that you need to take insulin to manage your blood sugar levels effectively, you should start treatment as quickly as possible. Not taking insulin if you need it can lead to significant health issues, including high blood sugar and hyperglycemia.

Many people living with type 2 diabetes can benefit from insulin therapy, but like most medications, it carries some risks. The most serious risk is low blood sugar, or hypoglycemia. Left untreated, low blood sugar can be a medical emergency.

Low blood sugar can usually be treated quickly and effectively by eating a high-sugar item, such as glucose tablets, and then monitoring your blood sugar levels. If your doctor prescribes insulin to you, they’ll talk to you about managing the risk of low blood sugar.

There are other risks with taking insulin. For example, the injections can be uncomfortable. Insulin can also potentially cause weight gain or, rarely, infection at the injection site.

Your doctor can tell you more about the potential benefits and risks of adding insulin to your treatment plan. If you think you might be experiencing side effects from insulin, contact your doctor right away.

Many different treatments for type 2 diabetes exist. Your doctor might recommend other treatments over insulin. For example, they might encourage you to:

  • make lifestyle changes such as lose weight or increase exercise
  • take oral medications
  • take non-insulin injectables
  • get weight loss surgery

In some cases, these treatments might be effective for managing your blood sugar levels. In other cases, you might need insulin therapy.

If your doctor prescribes insulin, it doesn’t mean that you’ve failed. It only means that your diabetes has progressed and your treatment plan has changed.

Insulin isn’t available in pill form. To work properly, it has to be inhaled or injected. If insulin were taken as a pill, it would be destroyed by your digestive system before it had a chance to work.

Currently, there’s one type of inhaled insulin available in the United States. It’s rapid-acting and can be inhaled before meals. It’s not a suitable replacement for long-acting insulin, which can only be injected.

There are multiple types of insulin available to treat type 2 diabetes. The different types vary, in terms of:

  • how quickly they start to work
  • when they peak
  • how long they last

Intermediate-acting or long-acting insulin is typically used to maintain a low and steady level of insulin in your body throughout the day. This is known as basal or background insulin replacement.

Rapid-acting or short-acting insulin is typically used to provide a surge of insulin at mealtime. It can also be used to correct high blood sugar. This is known as bolus insulin replacement.

Talk to your doctor to learn which types of insulin are best for you. In some cases, you might need a combination of basal and bolus insulin. Premixed insulins containing both types are also available.

Some people with type 2 diabetes need a single dose of insulin per day. Others need two or more doses per day.

Your recommended insulin regimen can vary, depending on:

  • your medical history
  • trends in your blood sugar levels
  • the timing and contents of your meals and workouts
  • the type of insulin you use

Your healthcare team will instruct you about how often and when you should take your prescribed insulin.

Insulin injections can be administered using:

  • a syringe
  • an insulin pen
  • an insulin pump

You can use any of these devices to inject insulin into the fat layer below your skin. For example, you can inject it into the fat of your abdomen, thighs, buttocks, or upper arms.

Your healthcare provider can help you learn how to inject insulin. Ask them about the relative benefits and downsides of using a syringe, insulin pen, or insulin pump. They can also teach you how to safely dispose of used equipment.

Injecting yourself with insulin might seem intimidating at first. But over time, you can become more comfortable and confident giving yourself injections.

Ask your healthcare provider for tips to make injections easier and less uncomfortable. For example, they might encourage you to:

  • use a syringe with a short, thin needle
  • use an insulin pen or pump, instead of a syringe
  • avoid injecting insulin into the same spot every time
  • avoid injecting insulin into muscles, scar tissue, or varicose veins
  • allow your insulin to come to room temperature before taking it

According to the American Diabetes Association, insulin will keep for about a month at room temperature. If you plan to store it for longer, you should refrigerate it.

Ask your doctor, pharmacist, or other healthcare provider for more advice on storing insulin.

Insulin therapy helps many people with type 2 diabetes manage their blood sugar levels. Your doctor can explain the potential benefits and risks of adding it to your treatment plan. They can also help you learn how to safely store and inject insulin.