This free online course describes the medical and non-medical uses of opioids, and explains the human and economic costs related to opioid misuse. Opioids are a class of drugs often used as medicines because they can relieve pain but they are also highly addictive and every day with more than 130 people in the United States die from overdosing on opioid drugs. So, start the course today and learn valuable information about the opioid crisis.