This project is an attempt to redesign the insulin pen for adolescent diabetic users. The initial part of the project included a literature review of existing research done in the area of insulin delivery methods to validate the project area and understand the existing usability and design problems faced in this product category. I reflected on my own experiences growing up as a diabetic, as well as conducted user interviews to get a deeper understanding of the contextual problems. An iterative ideation process was adopted to work on solving the difficulties of a stable grip, controlled injection, and injection site tracking. Concepts were created and evaluated before the detailing and development of the final design.