The integration of 3D printing technology into healthcare, particularly in drug delivery, represents a transformative advancement in pharmaceutical treatment. This chapter explores the innovative applications of 3D printing that enhance precision, personalization, and efficiency in drug formulation. Traditional drug delivery methods often encounter challenges such as dosage accuracy and patient compliance. In contrast, 3D printing facilitates the development of complex, customizable drug delivery systems tailored to individual patient needs. By enabling the design of multilayered formulations and precise release mechanisms, this technology optimizes bioavailability and minimizes side effects. Moreover, the capability to integrate diagnostic tools with drug formulations enhances patient-centered treatment approaches. As the field progresses, 3D printing in drug delivery holds substantial promise for revolutionizing therapeutic strategies, improving patient outcomes, and streamlining production processes. This chapter outlines the key advancements, challenges, and future directions of 3D printing in drug delivery, emphasizing its potential to shape the future of medicine.