Drug naïvety is the physiological state of non-habituation or non-tolerance to either a specific drug or broader set of drugs related by pharmacological criteria. The term applies to the administration of psychotropics in contexts ranging from the professional medical treatment of patients to the non-medical abuse of any drug, as well as the veterinarian. Drug naïvety is the physiological state of non-habituation or non-tolerance to either a specific drug or broader set of drugs related by pharmacological criteria. The term applies to the administration of psychotropics in contexts ranging from the professional medical treatment of patients to the non-medical abuse of any drug, as well as the veterinarian.