S. 331HALT Fentanyl Act

What the bill would do

This act permanently places fentanyl-related substances as a class into schedule I of the Controlled Substances Act. A schedule I controlled substance is a drug, substance, or chemical that has a high potential for abuse; has no currently accepted medical value; and is subject to regulatory controls and administrative, civil, and criminal penalties under the Controlled Substances Act.

Summary by the Congressional Research Service. Last updated Jan 27, 2026.

• BillFull text · congress.gov(opens in a new tab)
• Roll callsenate.gov vote #127(opens in a new tab)