Biomaterials have become integral to the fast-evolving fields of pharmaceuticals and medicine, playing a vital role in diagnostics and therapeutics. Originally used in medical devices for tissue replacement or organ support, their applications have expanded beyond mere implantation. Biomaterials, which can be natural or synthetic, are designed to interact with biological systems, supporting or replacing damaged tissues while being compatible with human biology. Over time, advancements in material science have led to significant innovations in their use, particularly in drug delivery systems. Biomaterials now enhance the effectiveness of therapeutic agents like antibodies, peptides, and vaccines, and are applied in tissue engineering, prostheses, and dental implants. Recent research has focused on biomaterials as nanocarriers for controlled drug delivery, minimizing drug degradation and toxicity while optimizing therapeutic outcomes. As biocompatibility remains a crucial factor, new developments in biomaterials offer promising solutions for enhancing drug delivery, wound healing, and overall patient care.