How Fentanyl Works

Like heroin, morphine, and other opioid drugs, fentanyl works by binding to the body's opioid receptors, which are found in areas of the brain that control pain and emotions.  After taking opioids many times, the brain adapts to the drug, diminishing its sensitivity, making it hard to feel pleasure from anything besides the drug.  When people become addicted, drug seeking and drug use take over their lives.

SOURCE: National Institute on Drug Abuse

How Fentanyl Affects the Body

Similar to other opioid analgesics, Fentanyl produces effects such as relaxation, euphoria, pain relief, sedation, confusion, drowsiness, dizziness, nausea, vomiting, pupillary constriction, and respiratory depression.

Signs of Overdose

Recognizing the signs of opioid overdose can save a life.  Here are some things to look for:

• Small, constricted "pinpoint pupils"
• Falling asleep or losing consciousness
• Slow, weak, or no breathing
• Choking or gurgling sounds
• Limp body
• Cold and/or clammy skin
• Discolored skin (especially in lips and nails)