Abstract
This volume was initiated to meet the challenges of the increasing contemporary trend to "treat" substance users (in the broadest sense of this concept), whether in institutional settings, ambulatory programs, or even controlled environments such as prisons. Although several essays concentrate more particularly on some of the ethico-moral problems encountered by juridico-moral interventions--problems relating to criminalization, decriminalization, legalization, and interdiction--the main focus is on broadly medical or therapeutic responses to drug use, and in particular on problems encountered within the domain of drug user counseling. Codes of ethics for drug user counselors can be found as an appendix.