Since the beginning of the COVID-19 pandemic, industry and healthcare providers have investigated methodologies to manage infection of SARS-CoV-2. One treatment breakthrough has been the introduction of monoclonal antibodies to prevent worsening SARS-CoV-2 infection in non-hospitalized patients diagnosed with COVID-19. These monoclonal antibodies, like bamlanivimab, bind to the SARS-CoV-2 spike protein and prevent its ability to binding to human ACE2 receptors. This is a case of a 91 year-old man with no prior seizure history who developed new-onset seizures after bamlanivimab infusion.