Most past year alcohol initiates in 2010, 82.4 percent of the 4.7 million, were younger than 21 the first time they consumed alcohol.
Methadone, along with single-ingredient and combination forms of oxycodone and hydrocodone, was one of the most frequently reported drugs in terms of nonmedical use in emergency room visits in 2009.
Withdrawal symptoms that occur because of cessation after long-term inhalant abuse can include weight loss, muscle weakness, disorientation and depression.
Some addicts who use methadone claim that they experience effects similar to that of other opiates such as heroin, albeit not to the same extent.