Everything You Need To Know About Insulin: Administration, Dosage, and Proper Disposal

What is Insulin?

Insulin is a hormone that is produced by the pancreas, and it plays a critical role in the regulation of blood sugar levels. Insulin works by helping the body to move glucose (sugar) from the bloodstream into the cells, where it can be used as energy. Insulin also helps to keep the level of glucose in the blood within a healthy range by promoting the storage of glucose in the liver and muscle tissue.


Types of Insulin:

There are several types of insulin available, classified based on their onset, peak, and duration of action. Some of the common types of insulin include:

  1. Rapid-acting insulin
  2. Short-acting insulin
  3. Intermediate-acting insulin
  4. Long-acting insulin
  5. Ultra-long-acting insulin

Function of Insulin:

The primary function of insulin is to regulate glucose metabolism in the body. It facilitates the transport of glucose into the cells, where it is utilized for energy or stored as glycogen. Insulin also inhibits the breakdown of fats and proteins, promoting their storage and synthesis.

Production of Insulin:

Insulin is produced by the beta cells of the pancreas, which are located in the islets of Langerhans. The pancreas secretes insulin in response to rising blood glucose levels. Insulin production is regulated by several hormones, including glucagon, somatostatin, and pancreatic polypeptide.

Regulation of Insulin:

Insulin secretion is regulated by a complex feedback mechanism that involves several hormones, neurotransmitters, and nutrients. The primary regulators of insulin secretion are glucose and amino acids. When the blood glucose levels rise, the beta cells of the pancreas secrete insulin, which helps in the absorption of glucose by the cells.

Insulin Resistance:

Insulin resistance is a condition where the cells become resistant to the action of insulin, leading to high blood glucose levels. It is a common feature of type 2 diabetes and is associated with several risk factors such as obesity, sedentary lifestyle, and genetic factors. Insulin resistance can be managed through lifestyle modifications, including regular exercise and a healthy diet.

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Different Methods for administering Insulin:


Insulin can be injected using a syringe with a fine needle. The syringe is filled with the required dose of insulin, and the needle is inserted into the skin.

Insulin pen

An insulin pen is a device that looks like a pen and is pre-filled with insulin. It has a dial that allows the user to select the required dose and a needle that is used to inject the insulin.

Insulin Pump

An insulin pump is a device that delivers a continuous supply of insulin through a small tube that is inserted under the skin. The pump is programmed to deliver a certain amount of insulin throughout the day, and the user can also give additional doses as needed.

Insulin Jet Injector

An insulin jet injector is a device that uses a high-pressure jet of insulin to deliver the medication through the skin.

It's important to work with a healthcare provider to determine the most appropriate insulin injection method based on individual needs and preferences.

An Insulin Shot Can:


Lower high blood sugar levels

Insulin shots can be used to quickly bring down high blood sugar levels, which can happen if a person with diabetes takes too much diabetes medicine, eats more than usual or doesn't get enough physical activity.

Control blood sugar levels

Insulin shots can be used as part of a treatment plan to help keep blood sugar levels within a target range. This is usually done by using a combination of rapid-acting insulin (taken before meals) and long-acting insulin (taken at bedtime or before breakfast). Controlling blood sugar is key to managing diabetes where making lifestyle changes such as switching to healthy snacks can be vital. If you're looking for a healthy & tasty snack option, try our delicious Keeros Multigrain Roasted Supersnack

Provide a steady background insulin level

Long-acting insulin shots can be used to provide a steady background level of insulin throughout the day.

It's important to note that the specific dosing and timing of insulin shots will depend on the individual's needs and will be determined by a healthcare professional such as an endocrinologist or primary care provider.

Where to inject insulin?

Insulin can be injected into the fatty tissue just below the skin, typically in the abdomen, thighs, buttocks, or upper arms.

It is important to rotate the injection site to avoid irritation and scarring, as well as to ensure that the insulin is absorbed evenly.

The injection site should be clean and dry, and it is generally recommended to inject insulin at least an inch away from any scars or moles.

How to inject insulin?

Here are some general steps for injecting insulin:

  1. Before injecting insulin, wash your hands with soap and water.
  2. Gently pinch the skin at the injection site to create a fold of fatty tissue.
  3. Hold the insulin syringe or pen with the needle pointing down, and insert the needle into the skin at a 90-degree angle.
  4. Slowly push the plunger down to inject the insulin.
  5. After injecting the insulin, remove the needle and dispose of it safely, according to the manufacturer's instructions.

It is important to follow the dosage and frequency of insulin injections as prescribed by your healthcare provider. If you are new to injecting insulin, it may be helpful to practice with a healthcare provider or nurse before doing it.

Tips For Making Insulin Injections More comfortable and Effective:

  1. Use a new, sterile needle each time you inject insulin.
  2. Inject the insulin at room temperature to avoid discomfort.
  3. Use a short needle for a more comfortable injection.
  4. Massage the injection site after injecting to help the insulin be absorbed more evenly.
  5. Use an insulin pen or pump if injections with a syringe are difficult or uncomfortable.

If you experience pain or discomfort while injecting insulin, try using a different injection site or using a different brand of needle.

If you have trouble injecting insulin, don't hesitate to ask for help from a healthcare provider or nurse.

By following these tips, you can help to make insulin injections more comfortable and effective, and ensure that you are getting the most benefit from your medication.

Proper Disposal of Needles & Syringes

Proper disposal of needles and syringes is important to prevent accidental injuries and to protect the environment. If you use needles and syringes to inject insulin or other medications, here are some guidelines for disposing of them safely:

Do not throw needles and syringes in the trash or recycling bin. Do not flush needles and syringes down the toilet.

Use a puncture-resistant container, such as a sharps disposal container, to store used needles and syringes. These containers are designed to safely dispose of sharps and prevent accidental injuries.

Follow the instructions provided by the manufacturer or your healthcare provider for disposing of needles and syringes in a sharps disposal container. By properly disposing of needles and syringes, you can help to protect yourself and others from accidental injuries and reduce the environmental impact of healthcare waste.



Q. What is the normal range of blood glucose levels?

A. The normal range of blood glucose levels is between 70-99 mg/dL when fasting and less than 140 mg/dL two hours after eating.

Q. What are the symptoms of insulin deficiency?

A. Symptoms of insulin deficiency include excessive thirst, frequent urination, blurred vision, fatigue, and weight loss.

Q. Can insulin be taken orally?

A. No, insulin cannot be taken orally as it is a protein hormone that is broken down by digestive enzymes in the stomach.

Q. Can insulin be stored at room temperature?

A. Insulin should be stored in a cool place, preferably in a refrigerator. It should not be exposed to extreme temperatures or direct sunlight.


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Author- Simran Sahni

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