For new prescription drugs to be approved by the FDA, they must first be tested in a laboratory on animals. According to Carl Cohen and Tom Regan, authors of The Animal Rights Debates: “Experiments using animals to improve human welfare are so numerous and so complex that it is impossible to present a complete account; the medical library would need to report. Almost all of the drugs, vaccines, and medical treatments that are widely used or in development today would not be available to us, or to our children, if it were not for animal testing. to establish their safety and effectiveness. The purpose of animal testing is to focus on the biocompatibility of humans. Biocompatibility relates to the ability of a material to react with an appropriate host response in a specific situation. Animal testing is necessary and vital for human well-being. Although there are drug trials that may not include animals, the FDA has stated that "testing without animals is not yet a scientifically valid and available option." However, there are laws and guidelines regarding animal testing.