US health officials are urging the Drug Enforcement Agency (DEA) to make kratom, the opioid supplement linked to scores of deaths, a schedule 1 drug.
At least 36 people have died of apparent overdoses after ingesting kratom, a controversial herb used in capsules, teas and powders.
The products are not FDA-approved or regulate and have been sold as supplements promising slight euphoria. Kratom has been marketed and become popular as an unapproved opioid withdrawal aid.