Clinical Trials & COVID-19

Opioid Use

What is opioid use disorder?

Opioid use disorder (OUD) involves tolerance, craving, inability to control use, and continued use of opioids, despite negative effects on everyday life.

There are several opioid drugs that can be addictive, including the following:

  • Hydrocodone (Vicodin)
  • Oxycodone (Oxycontin, Percocet)
  • Codeine
  • Morphine (Kadian, Avinza)
  • Fentanyl
  • Heroin

Opioids can be very dangerous, and people with opioid use disorder are at increased risk of overdose. Opioid overdose happens when a person takes too much of the drug, and it slows down their nervous system, sometimes to the point that breathing becomes difficult or stops. In the US, 130+ people die every day from opioid overdose, according to data from the US Department of Health and Human Services.