Tramadol: drug abuse and overdosage

Although tramadol can produce drug dependence of the ?-opioid type (like codeine or dextropropoxyphene) and potentially may be abused, there has been little evidence of abuse in foreign clinical experience. In clinical trials, tramadol produced effects similar to an opioid, and at supratherapeutic doses was recognized as an opioid in subjective/behavioral studies. Tolerance development has been reported to be relatively mild and withdrawal when present, is not considered to be as severe as that produced by other opioids. Part of tramadol's activity and some extension of the duration of ?-opioid activity. Delayed ?-opioid activity is believed to reduce a drug's abuse liability.

An assay for tramadol is not included in routine urine screens for drugs of abuse.