La substitution propose de remplacer une substance dont le patient est dépendant par un analogue pharmacologique moins nocif afin de faciliter l'arrêt ou la réduction des prises, et réduire les dommages induits du produit initialement consommé. Devenue classique pour les opioïdes ou le tabac, il n'existe à ce jour aucun traitement de substitution validé pour l'addiction à l'alcool. Les consommations d'alcool ou de benzodiazépines, deux agonistes des récepteurs GABA A , sont parmi les plus élevées en France, souvent associées. Alors que l'éthanol est un toxique majeur pour l'organisme, les benzodiazépines ont un meilleur profil de sécurité, malgré divers risques ou effets secondaires. Certains arguments suggèrent que les benzodiazépines pourraient être une substitution à l'alcool. Pour explorer cette hypothèse, une revue narrative de la littérature a été conduite, ne retrouvant que de rares publications, envisageant la possibilité de substitution partielle ou approchée de l'alcool par des benzodiazépines. Afin de conforter cela, des études complémentaires sont nécessaires, de validation pharmacologique ainsi que d'élaboration des abords psychosociaux d'accompagnement de cette médiation. Substitution therapy proposes to replace a substance on which the patient is dependent by another less harmful. Substitution substances are pharmacological analogues to addictive substances, used to facilitate the cessation or reduction of their use, and to reduce their deleterious consequences. Conventionally used for opioids or tobacco, there is to date no validated substitution treatment for alcohol addiction. The use rates of both alcohol and benzodiazepines are among the highest in France, and are frequently associated. France is a country in which alcohol is the second most frequent toxic used, and the most damaging determinant of health for mortality and morbidity after smoking. Meanwhile, alcohol and benzodiazepines are the two most common GABA A receptor agonists, with multiple similarities, despite some distinct chemical properties and actions. However, ethanol has a major toxicity for the body whereas benzodiazepines have a better safety profile, despite various risks and possible side effects. Benzodiazepines are the recommended treatment for alcohol withdrawal, but the guidelines are limited in time on the first two weeks, while only few studies have addressed the pros and cons of maintaining benzodiazepines beyond the detox period.Some arguments suggest that benzodiazepines could be a substitute for alcohol. Both are GABA A receptor agonists. In practice, it is frequent to observe crossed dependences, and, in particular, situations in which subjects with alcohol dependence change for benzodiazepine dependence. However, the medical practice of durably switching alcohol for benzodiazepines has been poorly explored. To review the pharmacological and clinical arguments for and against considering benzodiazepines as a potential substitution treatment for alcohol dependence. A narrative review of international literature has been conducted using the following keyword algorithm: (" substitution" OR "replacement" OR "maintenance") AND "alcohol" AND "benzodiazepine*" , without any limitation in time. Among a few hundred articles found on PubMed, only 3 were finally retained, with only 1 controlled study, no review of literature, supplemented by references found during the readings. The possibility of alcohol substitution by benzodiazepines is addressed, with a partial or approximate terminology reserve for qualifying this substitution. Diazepam appears as the molecule of choice. Such a substitution method, out of its usual field and in a design partly innovative in care, could decrease alcohol damages and perhaps consumption levels. Given the impossibility of conducting the synthesis of a non-existent literature, only an exploratory approach is possible, no recommendation or indication of the use of benzodiazepine as an alcoholic substitution can be formulated, without development validation studies of a such hypothesis (including researches about safety, choice of molecule, ways of psychosocial support...). In order to rethink the place of benzodiazepines in alcohol treatment strategies, owing to their frequent consumption with alcohol, the possibility of an approached alcoholic substitution using these drugs should be considered further. The prolonged used of benzodiazepines after alcohol withdrawal could consist of a harm reduction approach which could help support a psychosocial recovery. Long half-life molecules could be safer and easier to use, and should warrant future clinical trials. [ABSTRACT FROM AUTHOR]