Suboxone treatment helps to eliminate all symptoms of opioid withdrawal, including anxiety.
When the body is without the opioids it is used to, all the opioid receptors in our brains are empty which can experience a number of symptoms, including increased anxiety. Suboxone binds to those empty receptors and fills them up as a substitute for the opioids that used to be there. This helps to prevent the symptoms of withdrawal, such as anxiety.
Another medication, Clonidine, is also often used either with or without Suboxone to reduce anxiety, particularly at first when a patient is detoxing for opioids. Clonidine is an alpha 2 agonist. It binds to alpha 2 receptors in the brain which are responsible for "calming down" the body's sympathetic nervous system, including anxiety. In addition, behavioral therapy, mind-body relaxation techniques, yoga, acupuncture, and other modalities have been shown to be useful for withdrawal-related anxiety.