Overview drug addiction, also called substance use disorder, is a disease that affects a person's brain and behavior and leads to an inability to control the use of a legal or illegal drug or. In the anatomical therapeutic chemical (atc) classification system, the active substances are divided into different groups according to the organ or system on which they act and their therapeutic,. The use of psychoactive drugs without medical supervision is associated with significant health risks and can lead to the development of drug use disorders.
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About who drug information who drug information is a quarterly journal providing an overview of topics relating to medicines development and regulation which is targeted to a wide audience of.
