Flualprazolam is a potent, non-approved benzodiazepine analog with limited clinical research, often found in illicit markets and associated with higher overdose risk due to unpredictable dosing. Alprazolam (Xanax) is a regulated prescription drug used for anxiety and panic disorders with established dosing guidelines. Both depress the central nervous system, causing sedation, impaired coordination, dependence, and potentially dangerous respiratory depression if misused.