General

High Alert Medication: This medication bears a heightened risk of causing significant patient harm when it is used in error.

**REMS Drug**

**Off Market Drug**
This medication is no longer available in the United States. Information provided here is for reference purposes only.

Pronunciation:
fen-ta-nil

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Trade Name(s)

• Ionsys

Ther. Class.

opioid analgesics

Pharm. Class.

opioid agonists

Controlled Substance Schedule: II