Inclusion Criteria:  18-70 years of age Meets Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V) criteria for active substance use disorder for any of the drug classes, except caffeine, including: alcohol; cannabis; hallucinogens; inhalants; opioids; sedatives, hypnotics, anxiolytics; stimulants (including cocaine); tobacco; and other or unknown substances. Seeking treatment for their addiction  Exclusion Criteria:  Meets DSM-V criteria for schizophrenia or any psychotic illness or any dissociative disorder (Dissociative identity disorder, Dissociative amnesia, Depersonalization/derealization disorder). History of severe withdrawal symptoms (i.e withdrawal seizures). History of dementia, epilepsy or seizures, cardiac arrhythmia, pacemaker/defibrillator, heart failure, asthma, panic disorder and other respiratory illnesses (ie: COPD).