Inhaling Fentanyl

Inhaling the synthetic opioid fentanyl -- approved by the US Food and Drug Administration for use as pain relief and anaesthetic -- can cause irreversible brain damage, according to a new study today.

Inhaling the synthetic opioid fentanyl -- approved by the US Food and Drug Administration for use as pain relief and anaesthetic -- can cause irreversible brain damage, according to a new study today.