Nearly 3 million Americans aged 12 or older in 2009 used prescription drugs non-medically for the first time within the past year.
Methadone maintenance treatment is a multi-billion dollar global industry which is very profitable for drug companies and clinics.
Vicodin increases levels of dopamine in the brain, which produces an intense euphoria or what is known as a high when it is abused.
Percocet addiction is the continued craving for the drug and the need to use more of it for the psychological and mood altering effects that users experience.