The same exact dose of Methadone could be ineffective for one person, but could also cause a deadly overdose for someone else who isn't tolerant to that dose.
Research indicates that some people consume alcohol to relieve feelings of stress.
THC levels in hashish can vary from almost none to 70%, and hash oil from 30-90%.
Large amounts of dopamine in the brain as a result of a methamphetamine may lead to irreparable brain damage, because the drug destroys natural dopamine production sites.