Immunoglobulins have emerged as an important tool in passive immunization for the prevention and treatment of infectious diseases. Immunoglobulins are the proteins produced by B cells that bind to specific pathogens, neutralize them, and facilitate their removal by the immune system. In preventive healthcare, immunoglobulins are used for primordial, primary, secondary, tertiary, and quaternary prevention of infectious diseases. This work was designed to carry out an extensive literature search to provide useful information on immunoglobulins as the tools of passive immunization in preventive healthcare. Relevant and accurate literatures were sourced from the World Health Organization. Centers for Disease Control and Prevention, National Center for Disease Control, PubMed, Scopus, PLoS One, and NATURE journals: Primordial prevention aims to prevent the emergence and spread of risk factors for infectious diseases. Immunoglobulins can be used to prevent the spread of infectious diseases by targeting the pathogens that cause them. The primary prevention aims to prevent the initial infection of individuals at risk of acquiring infectious diseases. Immunoglobulins can be used as prophylaxis to prevent the onset of infection in high-risk individuals. The secondary prevention aims to reduce the severity and duration of infectious diseases. Immunoglobulins can be used to treat infectious diseases and prevent complications. The tertiary prevention aims to prevent the recurrence and complications of infectious diseases. Immunoglobulins can be used to prevent the recurrence of infections in individuals who have already been infected. Quaternary prevention aims to prevent the overuse, misuse, and abuse of medical interventions. Immunoglobulins can be used to prevent the development of antibiotic resistance by reducing the use of antibiotics. However, the use of immunoglobulins in preventive healthcare is not without challenges. The cost-effectiveness of immunoglobulin therapy, long-term safety, and the potential for cross-infection are some of the challenges that need to be addressed. Further research is needed to optimize the use of immunoglobulins in preventive health-care delivery. Immunoglobulins are valuable tools in passive immunization for the prevention and treatment of infectious diseases in preventive healthcare. Their use can help reduce the burden of infectious diseases and improve public health outcomes. Keywords: Immunoglobulins, passive immunization, preventive healthcare.