Archive · 23 Sep 2026
Hayden Panettiere’s Death Highlights Fentanyl’s Deadly Overdose Risks
Hayden Panettiere was found unresponsive at a home in South Carolina.
The coroner said her accidental death was caused by the toxic effects of fentanyl and other substances.
Fentanyl is a very strong medicine-like drug that can stop a person from breathing.
It works quickly, so an overdose can become dangerous fast.
Illegal fentanyl can also be hidden in pills that look like other medicines.
Mixing it with drugs that cause sleepiness can make breathing problems worse.
Naloxone, also called Narcan, can help restart normal breathing during an opioid overdose.
People should still call emergency services because naloxone may wear off and more than one dose may be needed.
The Greenville County Coroner’s Office ruled Hayden Panettiere’s death accidental and attributed it to fentanyl’s toxic effects alongside several other substances.
Fentanyl is a fast-acting synthetic opioid estimated to be 30 to 100 times more potent than heroin or morphine.
Illicit fentanyl may be sold as powder or counterfeit pills, meaning users may not know they are taking it.
An overdose can dangerously slow or stop breathing, causing oxygen deprivation, brain injury and death.
Naloxone can rapidly reverse an opioid overdose, but emergency medical help remains necessary and multiple doses may be required.
- Who
- Actor Hayden Panettiere; the Greenville County Coroner’s Office investigated and ruled on the death.
- What
- Panettiere’s death was ruled accidental and linked to the toxic effects of fentanyl and other substances.
- When
- Not specified in the article.
- Where
- At a residence in Greenville, South Carolina.
- Why
- The coroner attributed the death to fentanyl’s toxic effects along with 4-ANPP, alprazolam, methocarbamol and quetiapine.
- Age
- Hayden Panettiere was 36.
- Cause of death
- The toxic effects of fentanyl, alongside 4-ANPP, alprazolam, methocarbamol and quetiapine.
- Manner of death
- Accidental, according to the Greenville County Coroner’s Office.
- Fentanyl potency
- It can be 30 to 100 times more potent than heroin or morphine.
- United States deaths
- An estimated 74,702 people died of fentanyl overdose in 2023, compared with 76,226 in 2022.
- Share of overdose deaths
- Fentanyl-related overdoses accounted for more than 69% of total overdose deaths in the United States in 2023.
- Overdose reversal
- Naloxone, also known as Narcan, can reverse opioid overdose effects, though more than one dose may be needed.