Fentanyl

Prescription drug

READ MORE FROM 

Fentanyl is a potent, synthetic opioid pain medication with a rapid onset and short duration of action. It is a potent agonist of μ-opioid receptors in the brain.

READ MORE FROM https://en.wikipedia.org/wiki/Fentanyl

Lethal Dose- Heroin X fentanyl

Lethal Dose- Heroin X fentanyl