FDA expands crackdown on herbal supplement Kratom

The Food and Drug Administration is going after three marketers and distributors of products with the herbal drug Kratom, saying they are making false claims about the controversial pain drug.

The warnings announced Tuesday by the FDA are part of a larger crackdown on Kratom, which the agency said is not safe and there are no FDA-approved uses for it. The companies made false claims that Kratom can help people recover from opioid addiction and treat pain, cancer and lower blood pressure, FDA says.