FMO2 (Flavin Containing Monooxygenase 2): FMO2 is an enzyme that plays a crucial role in the metabolism of xenobiotics, drugs, and other foreign compounds. Utilising flavin adenine dinucleotide (FAD) as a cofactor, it aids in the detoxification of nitrogen-containing substances. FMO2 is predominantly expressed in the lungs, and genetic variants can influence its activity, affecting individual responses to certain medications and environmental toxins.