The problem with Fentanyl is dosage. It's really concentrated so if the manufacturing or separation into portions isn't well controlled then it's easy to end up

The problem with Fentanyl is dosage. It's really concentrated so if the manufacturing or separation into portions isn't well controlled then it's easy to end up with a much higher dose than expected. In a hospital with a known reliable source, you can get the right dose. When it's been cut into fake pain pills, it's easy to overdose.