The US FDA has issued 7 warning letters to companies illegally marketing products containing 7-hydroxymitragynine.

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 ...

The US Food and Drug Administration has published more than 200 complete response letters, or decision letters, sent as replies to drug and biological product applications submitted to the agency from ...