Tianeptine is an atypical antidepressant used medically in some countries (not FDA-approved in the U.S.), but at high doses it acts on opioid receptors — which is why it’s been misused as an opioid substitute and sold, sometimes legally in some states, in gas stations and convenience stores under various brand names.
Why this is dangerous territory: Because it’s marketed as a supplement rather than regulated as a drug, dosing and purity are inconsistent, and many users don’t realize they’ve developed opioid-receptor-mediated physical dependence until they try to stop.
Withdrawal profile: Can resemble opioid withdrawal (anxiety, sweating, GI distress, cravings) combined with antidepressant-discontinuation-like symptoms (mood swings, unusual sensory symptoms) — a combination that can be more complex to manage than a single-mechanism substance.
What this means practically: If you’ve been using a product containing tianeptine and are trying to stop, treating it purely as “just a supplement withdrawal” may underestimate what’s happening — a doctor experienced in addiction medicine, told specifically about tianeptine use, is worth seeking out rather than managing this alone.
Medically reviewed by [pending]. Sources: FDA warnings on tianeptine products, CDC case reports.