Aimee Techau is a psychiatric and addictions nurse practitioner and senior instructor at CU College of Nursing. We're going to discuss a "food supplement" drug called tianeptine which is unregulated in the United States and, according to some reporting (including recently by Tucker Carlson), may be the source of opiate-like addiction:
Tianeptine Products Linked to Serious Harm, Overdoses, Death | FDA
Tianeptine, or ‘Gas Station Heroin,’ Causes Intense Withdrawals And It’s Mostly Legal (vice.com)