Taking large doses of LSD does not increase the hallucinogenic effect of the potency of the drug.
Most opiate users continue to use opiates despite serious physical or psychological harm because opiate addiction can be so all consuming.
Opana dulls an individual's perception of pain, and at higher doses it can affect other systems such as those that control respiration and circulation.
The largest concentration of crack users in the U.S. are African-American males between the ages of 18 and 30 who come from low socioeconomic backgrounds.