Pharmaceutical development is the process of creating new medications to treat diseases and improve health. It involves several stages, including drug discovery, where scientists identify potential compounds, and preclinical testing, which assesses safety and effectiveness in laboratory settings. Once a promising drug is identified, it undergoes clinical trials involving human participants to evaluate its safety, dosage, and efficacy. After successful trials, the drug can be submitted for regulatory approval to agencies like the U.S. Food and Drug Administration (FDA), allowing it to be marketed and prescribed to patients.