How is insulin typically administered to patients?

Insulin is typically administered through injection using a syringe or pen due to its biochemical properties and the way it interacts with the body. Insulin is a protein hormone that would be broken down and rendered ineffective if taken orally, which is why oral administration in pill form is not suitable.

The injectable form allows insulin to enter the bloodstream directly, providing immediate regulation of blood glucose levels. Insulin pens make the process easier and more convenient for patients, allowing for accurate dosing and ease of use, which enhances adherence to diabetes management plans. Moreover, other methods such as inhalation or topical application do not provide the necessary absorption and efficacy needed to manage blood glucose levels effectively. Therefore, injection remains the standard and most reliable method for insulin delivery to patients with diabetes.