The US Food and Drug Administration has issued 7 warning letters to companies illegally marketing products containing 7-hydroxymitragynine (7-OH), which is found in trace amounts in kratom.

The U.S. Food and Drug Administration (FDA) has issued warning letters to seven companies accused of unlawfully marketing products containing 7-hydroxymitragynine (7-OH), a potent opioid compound ...

U.S. Food & Drug Administration (FDA) warning letter to a prominent wellness product and services company offers a blunt reminder ...