In recent years, as fentanyl has flooded the market, people who use illicit opioids have developed a higher tolerance. A new study suggests that the opioid substitutes used to treat those people may need to be increased.
In recent years, as fentanyl has flooded the market, people who use illicit opioids have developed a higher tolerance. A new study suggests that the opioid substitutes used to treat those people may need to be increased.
