I'm confused about what is actually going on here. The FDA claims [1] that Tianeptine can't be used as a supplement ingredient so selling it should be illegal.

I'm confused about what is actually going on here. The FDA claims [1] that Tianeptine can't be used as a supplement ingredient so selling it should be illegal. That was from 2018 so there is no reason it should still be able to be sold. Notwithstanding, The FDA could simply put Tianeptine on the controlled substances list. 1: https://www.fda.gov/food/dietary-supplement-products-ingredients/tianeptine-dietary-supplements https://www.fda.gov/food/dietary-supplement-products-ingredi...