Benzodiazepines such as Xanax account for twenty percent of the total volume of prescriptions that are written for controlled substance in the United States.
During WW II American bomber pilots used amphetamines to stay awake during long missions.
In 2006 the FDA published a warning entitled "Methadone Use for Pain Control May Result in Death and Life-Threatening Changes in Breathing and Heart Beat, stating that the FDA has received many reports of death and life-threatening side effects in patients that have taken methadone as prescribed by their physicians for pain relief.
Individuals absorb around 10-25% of the THC contained in hashish when it is inhaled and only 6% when it is eaten.
Drug injectors who do not enter drug rehab are up to six times more likely to become infected with HIV than those who enter and remain in treatment.