This document discusses overdose prevention and harm reduction strategies. It defines overdose as occurring when a toxic amount of drugs overwhelms the body. It then focuses on opioid overdose, describing signs and symptoms, priority groups at risk, and how to respond by stimulating the person, calling for help, ventilating if needed, administering naloxone, and monitoring the person. It also discusses access to naloxone in Texas, stimulant overdose, and general risk factors. The document promotes harm reduction strategies like avoiding mixing drugs, using less after periods of no use, knowing one's tolerance, and not using alone.