People have been sending me tianeptine sources for anyone that asks, so here's a quick compilation of them.
Tianeptine is only meant for research purposes in the US (it may have actually killed someone).
Tianeptine sodium (unknown solution).
Tianeptine sodium salt.
COA may be available on request.
Special-purpose option: tianeptine sulfate
This form is more expensive, but can have benefits in some situations over regular tianeptine sodium salt. See Ceretropic's description for details.