Are the ingredients in immunizations dangerous?

No. Immunizations and their ingredients are also studied extensively before licensure to ensure their safety. Certain ingredients are used to maintain the safety and sterility of a vaccines, and to increase the immune response. The below link to the Vaccine Education Center at The Children’s Hospital of Philadelphia breaks down a lot of this information. The ingredients in immunizations are included to create a stronger immunize response and make them work better. The ingredients do not cause diseases.