This comprehensive pharmacology report examines Nivolumab, a human immunoglobulinG4 monoclonal antibody, focusing on its application in treating non-small cell lung cancer and other cancers. The report includes a case study of a 46-year-old patient, Mr. A, who was diagnosed with non-small cell lung cancer and treated with Nivolumab after chemotherapy. The discussion covers the drug's generic and trade names (Opdivo), FDA approval, mechanism of action, pharmacokinetics (absorption, distribution, metabolism, and elimination), pharmacodynamics, usual route and dosing, common and serious side effects, patient education, cost analysis, and drug interactions with Ipilimumab and Pembrolizumab. The report also includes a simulated discussion with a pharmaceutical representative, highlighting the drug's development, dose-dependent efficacy, and its role as a second-line treatment option. The report references various studies and clinical trials to support its findings, offering a detailed overview of Nivolumab's pharmacology and clinical applications. The report also included the discussion on the combination therapy with other drugs and pharmaceutical representative's opinion on the drug.