Fentanyl now turns up in counterfeit pills made to look like prescription medication, and it gets mixed into heroin, cocaine, and other street drugs. That means someone can take fentanyl without knowing it is there. If you are watching a loved one and something seems off, pay attention to it. Learning what fentanyl use looks like, from pinpoint pupils to slowed breathing to sudden changes in behavior, gives you time to act before an overdose happens. Early recognition genuinely saves lives.