Tianeptine ("Gas Station Heroin"): Why the FDA Keeps Warning About This Fake Focus Supplement

If you shop for focus or energy products, you have probably walked past tianeptine without knowing it: a small, brightly colored bottle on a gas station counter, sold as a "nootropic" or a mood shot. It is not a supplement and not a legal ingredient in the United States — it is an unapproved drug with opioid activity that the FDA has warned about three times since 2023. Here is what tianeptine actually is, which product names and label words to watch for, and what to do if a bottle is already in your bag.

What is tianeptine, and why is it called "gas station heroin"?

Tianeptine is a drug, not a nutrient. In some European, Asian and Latin American countries it is licensed as an atypical antidepressant; in the United States it is not approved by the FDA for any medical use, is not generally recognized as safe for use in food, and does not meet the legal definition of a dietary ingredient [1][2].

Pharmacologically, it is unusual. It is thought to act through glutamate modulation, and it is a full mu-opioid and weak delta-opioid receptor agonist — the same receptor family that opioid painkillers act on [1]. Clinicians also describe it as an atypical tricyclic antidepressant that enhances serotonin reuptake alongside that mu-opioid activity [3]. In countries where it is approved, the usual labeled dose for depression is 12.5 mg taken three times a day, and the FDA notes that higher doses can produce euphoria, which is why several countries have restricted prescribing or added addiction warnings to the label [1].

The nickname comes from where people find it. The FDA says tianeptine is frequently sold in convenience stores, gas stations, vape shops and through online retailers, and that it "has also been referred to as 'gas station heroin'" [1]. News coverage of the agency's 2025 alert used the same framing: a product with opioid-like effects sitting on shelves next to ordinary energy shots [4].

Bottom line: Tianeptine is not a vitamin, botanical, amino acid or any other dietary ingredient. Products that contain it are, in the FDA's view, adulterated and unlawful — regardless of how the bottle is labeled [2].

Legal gray zone, not legal safety

Part of what makes tianeptine confusing for shoppers is that it has not been scheduled federally under the Controlled Substances Act, so it is not "illegal" in the way people usually mean [1]. That is a regulatory gap, not a safety verdict. Because tianeptine is neither a dietary ingredient, an approved food additive, nor generally recognized as safe, any supplement containing it is adulterated under federal law, and products sold with health claims are unapproved new drugs [2].

Timeline: the FDA's escalating warnings, 2023–2025

The agency's language has hardened steadily over two years.

Alongside those public alerts, the FDA has issued warning letters to companies selling tianeptine and placed products on import alert so shipments can be detained at the border [1][10].

Two details in that timeline matter more than the dates. First, the Super Chill recall was never publicly announced by the company, so bottles could easily have stayed in circulation [5]. Second, the FDA's own alert notes that Neptune's Fix labels did state tianeptine as an ingredient, but the products "may contain other harmful ingredients not listed on the label" [5]. With this category, the label is not a reliable description of what is in the bottle.

How tianeptine is marketed as a "nootropic" or energy and focus supplement

Tianeptine rarely shows up branded as an opioid alternative. It is dressed as a brain or mood product. The FDA says it is marketed as a "research chemical," a "nootropic" cognitive enhancer, or a dietary supplement, with unproven claims that it can improve brain function and treat anxiety, depression, pain and opioid use disorder [1][10].

Product names the FDA has specifically listed include Tianaa, Zaza, Neptune's Fix, Pegasus and TD Red [1]. The agency's ingredient directory also lists aliases used on labels and listings: tianeptine sulfate, tianeptine sodium powder, Tianaa, Tianna Green, Tianna Red and Tianna White [2]. Formats vary — the FDA has seen pills, liquids and powders sold online [10], while the New Jersey cases involved a flavored elixir shot sold in small colorful bottles, combined with kavain [3].

The "research chemical" dodge is the clearest tell. In its September 2025 warning letter, the FDA told an online seller that despite labeling products "for laboratory and research use only," the marketing language on its website and social accounts established that the tianeptine products were intended as drugs for humans — and therefore unapproved new drugs [9]. The claims the agency quoted included treating major depressive disorder, reducing anxiety and enhancing cognitive function [9].

Good to know: Tianeptine may not show up on routine drug screening panels, which is one reason clinicians can miss it when someone arrives at an emergency department confused or sedated [1].

The real risks: dependence, overdose and death

Doses far beyond anything therapeutic

The FDA points to case reports describing U.S. consumers taking daily doses on the order of 1.3 to 250 times the daily dose recommended in labeled foreign drug products — roughly 50 mg to 10,000 mg a day, against a labeled 12.5 mg three times daily [1]. People escalate because the mu-opioid effect produces tolerance, and because nothing on a gas station counter is dosed like medicine.

Reported adverse effects

Adverse events the FDA associates with tianeptine ingestion include agitation, confusion, drowsiness, sweating, nausea, vomiting, tachycardia, hypertension, respiratory depression, coma and death [1]. The agency has also identified serious harm in people who combined tianeptine with other drugs, including antidepressants and antianxiety medicines [10].

Dependence and withdrawal

This is the part most product pages never mention. Tianeptine is frequently used chronically, and the FDA warns that abruptly stopping can produce withdrawal symptoms resembling opioid discontinuation: craving, sweating, goose flesh, diarrhea and muscle aches [1]. The CDC has reported that the clinical effects of tianeptine abuse and withdrawal can mimic opioid toxicity and withdrawal [10]. In the CDC's review of national poison center data from 2000 to 2017, 29 of 218 tianeptine calls were withdrawal-associated, most commonly involving agitation, nausea, vomiting and tachycardia [11].

The exposure numbers keep climbing

Poison center data give the clearest picture of the trend:

• From 2000 through 2013, U.S. poison centers logged just 11 tianeptine exposure calls in total; calls then rose from 5 in 2014 to 38 in 2015, 83 in 2016 and 81 in 2017 [11].
• Annual cases reached 151 in 2020 [12] and about 350 in 2024, up from 4 in 2013 [10].
• An analysis of single-substance tianeptine exposures reported to U.S. poison centers found 892 cases between 2015 and 2023, with the exposure rate rising roughly 1,400% over that period and withdrawal accounting for about 22.5% of cases [13].

Severity is not trivial. Among tianeptine-only exposures in the CDC's 2000–2017 review, neurologic effects were the most common finding, and about a quarter of people with a reported level of care were admitted to a critical care unit [11].

When the bottle contains something else entirely

The New Jersey cluster shows how unpredictable these products are. Between June and November 2023, the state poison center received 20 exposure calls involving 17 patients aged 28 to 69 — a sharp jump from a baseline of two or fewer calls a year [3]. Fourteen had taken Neptune's Fix. Every patient had altered mental status; 11 had tachycardia, 10 had low blood pressure, 8 had seizures, 7 had a prolonged QT interval and 1 had a cardiac arrest. Thirteen of the 17 were admitted to intensive care and 7 required intubation, though none died [3].

Laboratory analysis of six bottles found variable composition, including two synthetic cannabinoid receptor agonists that were not on the label, which listed only kavain and tianeptine [3].

Safety note: Call 911 if someone is unconscious or having trouble breathing [5]. For guidance on any suspected tianeptine reaction or overdose, the national Poison Help line is 1-800-222-1222, and the FDA points health professionals and the public toward over-the-counter naloxone nasal spray as an overdose reversal option to have on hand [1][5].

Red flags: how to spot tianeptine products before you buy

Most readers will never seek this drug out deliberately. The risk is buying it by accident from a display of focus shots, mood pills or "nootropic" capsules. These are the signals worth scanning for.

Check the ingredient line for these words: tianeptine, tianeptine sodium, tianeptine sulfate, tianeptine free acid, tianeptine ethyl ester sulfate [2][9]. Any of them means put the product down.

Watch the brand names the FDA has flagged: Tianaa, Zaza, Neptune's Fix, Pegasus, TD Red, plus Tianna Green, Tianna Red and Tianna White [1][2]. Brand names change faster than regulators can publish them, so treat the list as examples rather than a complete catalogue.

Treat "research chemical" and "not for human consumption" as warnings, not disclaimers. A product that tells you it is for laboratory use while describing how it will lift your mood is describing a drug, and the FDA has said exactly that in enforcement letters [9].

Be skeptical of claims no supplement is allowed to make. Marketing that promises to treat depression, anxiety, pain or opioid dependence is, by definition, a drug claim [10][12]. Our guide to reading a Supplement Facts label walks through what legitimate labels can and cannot say.

Notice where and how it is sold. Small colorful shot bottles, flavored elixirs and single-serve pills at gas stations, smoke shops and vape shops are the classic format [1][3]. Online, the same products often sell through storefronts that also ship peptides and other "research" compounds [9].

If you buy from marketplaces or social commerce, the vetting problem is the same one we cover in how to check TikTok Shop supplements, and third-party certification is the most useful filter available to a shopper — see NSF vs. Informed Sport vs. USP.

What to do if you already bought one

• Stop using it — but do not assume stopping cold is harmless. The FDA told consumers, distributors and retailers holding recalled Neptune's Fix products to dispose of them or return them to the place of purchase [5]. If you have been taking a tianeptine product daily, talk to a clinician before stopping, because withdrawal can resemble opioid withdrawal [1].
• Keep the packaging. Photos of the label, the lot number, the expiration date and where you bought it are exactly what FDA investigators need [1].
• Report it. Adverse events can be submitted to FDA's MedWatch program online or by phone at 1-888-INFO-FDA [1].
• Get help if you need it. For suspected poisoning, call 1-800-222-1222. For substance use treatment, the FDA points consumers to findtreatment.gov and the national helpline at 1-800-662-HELP (4357) [1][10].
• Tell your clinician what you took. Tianeptine may not appear on standard drug screens, and it can interact with antidepressants and antianxiety medications, so the information changes how you are treated [1][5][10].

This is one of those situations where a conversation with a healthcare professional genuinely matters — particularly if you are pregnant, taking prescription medication for mood or pain, or managing a substance use disorder.

Legitimate options for focus and energy

The uncomfortable truth behind this market is that tianeptine sells because it does something noticeable. Nothing in the legal supplement aisle produces an opioid-like effect, and that is a feature rather than a shortcoming: a focus product should make a normal day feel manageable, not altered.

If you are shopping that category, a few principles keep you out of trouble:

• Stick to ingredients with transparent, dose-labeled amounts. Caffeine, L-theanine, creatine and B vitamins all appear on labels with real numbers you can evaluate. We break down which stimulant and nootropic ingredients earn their place — and which are filler — in pre-workout ingredients that work.
• Fix the inputs first. Energy and concentration complaints often trace back to short or broken sleep rather than a missing compound; our evidence-ranked sleep supplement guide is a more useful starting point than another stimulant.
• Be suspicious of any product whose effect feels like a drug. Sedation, euphoria or a next-day crash from a "supplement" is a reason to check the ingredient list against authoritative sources, not a sign that you found something that works.
• Prefer products that submit to outside scrutiny. Third-party certification does not guarantee a product works, but it makes undeclared pharmaceuticals far less likely.

The bottom line

Tianeptine is an unapproved drug with full mu-opioid receptor activity that is being sold to American shoppers as a nootropic, a mood shot or an energy supplement [1]. The FDA has warned about it repeatedly since November 2023, overseen recalls, sent letters to gas station and convenience store trade groups, pursued criminal cases and, as recently as September 2025, warned online sellers to stop [5][7][9]. Poison center exposures have climbed from a handful a year a decade ago into the hundreds [10][13], the products are sometimes adulterated with substances that are not on the label [3], and the withdrawal pattern looks like opioid withdrawal [1].

You do not need to memorize pharmacology to stay safe here. Read the ingredient line, walk away from anything labeled a research chemical, and buy focus and energy products that tell you exactly what is in them and how much.