Chronic diseases are a leading cause of death globally, with implantable drug delivery devices offering a solution by ensuring controlled, continuous drug release, reducing patient non-compliance and systemic side effects. These devices, including pumps and polymers, are gaining interest for their potential in both developed and developing countries, aiming to improve healthcare access and reduce mortality. The Bill and Melinda Gates Foundation supports the development of long-term drug delivery implants to address medication non-adherence in developing countries, focusing on contraceptives and HIV prevention. Despite challenges like cost and patient acceptance, implantable devices promise to transform chronic disease treatment by minimizing healthcare visits and improving treatment adherence.