Buspirone is a relatively new anxiolytic drug that is believed to enhance the activity of serotonin, a neurotransmitter involved in regulating anxiety and mood. It takes within two weeks to take effect. For that reason, it is not useful for treating acute anxiety and insomnia. The primary advantages of buspirone are that it is not sedating and it does not result in physical dependence or tolerance as compared with benzodiazepines.
