3D Printing in Pharmaceuticals: Advances, Applications, and Future Directions for Personalized Medicine
TL;DR
3D printing will revolutionize pharmaceutical practice, enabling precision medicine, enhanced drug efficacy, and improved patient-centered outcomes, according to advancing technologies, harmonization of regulations, and clinical translation.
Abstract
Three-dimensional (3D) printing, also known as additive manufacturing, is an emerging technology in custom-made medicine and drug delivery that circumvents the limitations of conventional drug delivery systems. Traditional drug delivery systems suffer from shortcomings, including poor dose flexibility, less effective therapeutic outcomes, patient non-adherence, and the inability to integrate more than a single active pharmaceutical ingredient into a single dosage form. In contrast, 3D printing allows for precise control over drug dosage, morphology, architecture, and release rates, making highly adapted therapy possible. Fused deposition modeling (FDM), stereolithography (SLA), selective laser sintering (SLS), inkjet printing, and hot-melt extrusion (HME) have been successfully applied to print oral dosage forms, implants, transdermal devices, and tissue engineering scaffolds. 3D printing has enabled milestones such as polypills for polypharmacy, orally disintegrating tablets (ODTs), controlled- and sustained-release systems, and complex geometries for site-specific drug delivery. FDA-approved medicines, such as Spritam® (levetiracetam), demonstrate its clinical potential. Emerging patents reveal applications in patient-specific implants, regenerative scaffolds, bioactive medical devices, and multi-material printing technologies. Decentralized, on-demand manufacturing is also possible with this technology, which eliminates drug waste, enhances patient adherence, and improves access to medicines in resource-scarce areas. Challenges remain in regulatory control, material compatibility, reproducibility, and scalability. Future directions include 4D printing for stimuli-responsive drug delivery, precision dermatological patches, nanomedicine, and gene therapy applications. Coupled with diagnostics, predictive modeling, and bioinks, 3D printing has the potential to enable patient-specific, site-targeted, and adaptive therapeutic strategies. With advancing technologies, harmonization of regulations, and clinical translation, 3D printing will revolutionize pharmaceutical practice, enabling precision medicine, enhanced drug efficacy, and improved patient-centered outcomes.