What Are Gas Station Drugs? Kratom, 7-OH & Tianeptine, Explained

Key Takeaways

• “Gas station drugs” is the nickname for a group of substances, most commonly kratom, 7-hydroxymitragynine (7-OH), and tianeptine, that are sold legally at convenience stores, smoke shops, and online, even though none of them are approved by the FDA for any medical use and all three carry real risks for dependence and serious harm.
• 7-OH is a concentrated, isolated form of a compound naturally found in kratom, and federal regulators have specifically flagged it as an emerging opioid threat because it’s far more potent at opioid receptors than the kratom leaf it’s derived from.
• Tianeptine, sometimes called “gas station heroin,” has seen poison control center cases jump from just 4 in 2013 to roughly 350 in 2024, and products sold under names like Neptune’s Fix have also turned up contaminated with synthetic cannabinoids.
• If you’ve found unfamiliar packaging in your home or you’re questioning your own use, you’re not alone, and you don’t have to sort through the confusion by yourself. Support that treats the whole person, not just the substance, is available right here in Mississippi.

What Are “Gas Station Drugs,” Really?

You’ve probably seen them without realizing it. Small, brightly labeled bottles near the register. Capsules in a jar by the energy drinks. A shelf display with names that sound more like protein powders than anything that could hurt you.

“Gas station drugs” isn’t a scientific term. It’s a nickname that’s grown up around a handful of substances, most often kratom, 7-OH, and tianeptine, that are sold openly at convenience stores, vape shops, and online because none of them are classified as illegal narcotics under federal law. That legal gray area is exactly what makes them confusing, and exactly what makes them worth understanding.

Here’s the part that matters most: being legal to sell has never meant being safe to use. While the FDA has not done so, many of these have been regulated/banned by several state legislatures; however, they remain available in Mississippi. All three of these substances act on the same opioid receptors in the brain that drugs like morphine and heroin do. They can cause dependence, painful withdrawal, and in some cases life-threatening reactions, especially when combined with alcohol, benzodiazepines, or each other. Let’s walk through what each one actually is, what the research says, and what it means if you or someone you love has been using them.

Kratom: An Old Plant With a New Set of Problems

Kratom comes from Mitragyna speciosa, a tropical tree native to Southeast Asia. People there have chewed or brewed its leaves for generations. In the United States, it shows up as capsules, powders, and extracts, and it’s used by an estimated 1.7 million Americans age 12 and older.

People turn to kratom for a lot of reasons: chronic pain, anxiety, fatigue, or as a way to self-manage opioid withdrawal. At low doses, it can feel stimulating. At higher doses, it acts more like an opioid or sedative. Kratom’s effects are difficult to predict because products vary so widely in strength and purity, and some have tested positive for contaminants like heavy metals and salmonella.

The FDA has been direct about where it stands: kratom isn’t lawfully marketed in the U.S. as a drug, a dietary supplement, or a food additive, and the agency continues to warn against its use because of risks that include liver toxicity, seizures, and substance use disorder. The DEA has listed kratom as a “drug of concern,” though it isn’t currently scheduled under federal law. That’s part of why you can walk into a gas station and buy it without a second glance.

Kratom-related deaths are rare, and when they happen, they almost always involve other substances too. But rare doesn’t mean risk-free, and regular use can absolutely lead to the same cravings, tolerance, and withdrawal symptoms that define any substance use disorder.

7-OH: The Concentrated Opioid Hiding in Plain Sight

This is where things get more urgent. 7-hydroxymitragynine, or 7-OH, is naturally present in kratom leaves, but only in tiny amounts, less than 2% of the plant’s total alkaloid content. On its own, that small amount isn’t what worries federal regulators.

What worries them is what’s being sold now. Manufacturers have started isolating and concentrating 7-OH into standalone shots, tablets, and gummies, often marketed right alongside kratom at gas stations and vape shops. The FDA has stated plainly that 7-OH shows substantially greater potency at the brain’s mu-opioid receptors than both mitragynine (kratom’s main alkaloid) and classical opioids like morphine.

7-OH could potentially be the fourth opioid epidemic. The FDA has seized 7-OH products at the border, issued warning letters to companies selling them, and sent a formal safety letter to healthcare providers asking them to watch for 7-OH-related opioid toxicity in their patients.

If you’ve seen “kratom extract shots” or “7-hydroxy” products sitting on a counter next to the register, this is what they’re referring to. They’re not a milder version of kratom. In many cases, they’re a stronger, more concentrated opioid product with none of the oversight that comes with an actual prescription.

Tianeptine: The Antidepressant Nicknamed “Gas Station Heroin”

Tianeptine has the strangest story of the three. It’s an atypical antidepressant that’s legitimately prescribed in parts of Europe, Asia, and Latin America under brand names like Coaxil and Stablon. It has never been approved by the FDA for any use in the United States, which means every bottle of it sold here, often labeled as a “mood support” or “nootropic” supplement, is being marketed unlawfully.

At the doses used abroad for depression, tianeptine behaves like a typical antidepressant. At the much higher doses people are taking here, it acts as a mu-opioid receptor agonist, meaning it produces effects and withdrawal symptoms that closely mirror opioid use. The FDA has documented consumers taking daily doses between 1.3 and 250 times what’s typically prescribed elsewhere.

Annual poison control center cases involving tianeptine jumped from just 4 in 2013 to roughly 350 in 2024. Most people affected were between 21 and 40 years old, and agitation, confusion, rapid heart rate, and high blood pressure were among the most common effects reported to poison centers.

It gets riskier still because these products aren’t regulated, so what’s in the bottle isn’t always what’s on the label. Lab testing found several bottles were contaminated with synthetic cannabinoids, substances with their own unpredictable and sometimes serious effects. Patients experienced seizures, dangerously fast heart rates, and in one case, cardiac arrest.

Why “Legal” Doesn’t Mean “Low-Risk”

It’s worth saying this plainly, because it’s easy to assume otherwise: nothing about being sold at a gas station means a substance has been tested, dosed consistently, or proven safe. Kratom, 7-OH, and tianeptine all exist in a regulatory gap. They haven’t been approved as medications, but they also haven’t been scheduled as controlled substances, so they sit on shelves next to snacks and motor oil with none of the guardrails that come with either category.

That gap is exactly why people can develop real physical dependence on these substances without ever realizing they were using something with opioid-like effects in the first place. Withdrawal from any of them can include nausea, anxiety, muscle aches, and intense cravings, the same symptoms you’d expect from withdrawal off a prescription opioid.

Signs Someone You Love Might Be Struggling

If you found unfamiliar bottles or packets and you’re not sure what you’re looking at, a few patterns tend to show up with kratom, 7-OH, or tianeptine use:

• Using more of the product, or more often, than they originally intended
• Irritability, nausea, or flu-like symptoms when they go without it for a day or two
• Ordering the same product repeatedly online, or making frequent trips to a specific gas station or vape shop
• Mood swings that seem to track with when they last used
• Defensiveness or secrecy around the packaging you found

None of these signs mean you’re dealing with a moral failing. They mean a brain has adapted to a substance that acts on the same receptors as any other opioid, and that adaptation can be treated.

What To Do Next, Whether It’s You or Someone You Love

If you’re a parent or partner who just found something you didn’t recognize, take a breath. You don’t need to have this figured out tonight, and you don’t need to confront anyone in anger to make progress. Start by learning what you’re looking at, which is exactly what you’re doing right now, and then reach out to a treatment provider who can help you figure out next steps calmly.

If you’re the one using these products, maybe to manage pain, anxiety, or opioid withdrawal on your own, we want you to hear this clearly: needing help doesn’t make you weak, and you’re not the only one dealing with this. These substances were designed to feel like an easy fix. For a lot of people, they’ve quietly become something much harder to put down.

How Defining Wellness Treats Gas Station Drug Dependence

At Defining Wellness, we see substances like kratom, 7-OH, and tianeptine the same way we see any opioid-adjacent dependence: as something that responds to real clinical care, not shame. Because withdrawal from these substances can involve genuine physical risk, we typically start with medical detox, where our clinical team can manage symptoms safely and make sure you’re stable before moving into the next phase of care.

Many people using gas station drugs are also managing underlying anxiety, depression, chronic pain, or unresolved trauma, which is often what led them to self-medicate in the first place. That’s why our dual diagnosis program treats the substance use and the underlying mental health condition together, instead of addressing one and hoping the other resolves on its own.

From there, our evidence-based treatment programs combine therapies like cognitive behavioral therapy with the kind of whole-person care, nutrition, movement, and community, that helps people build a life they don’t feel the need to escape from. If residential care makes sense for your situation, our inpatient rehab program offers a structured, supportive environment on our Mississippi campus while you do that work.

None of this starts with a lecture. It starts with a conversation. If you’re ready to ask questions, our admissions team can walk you through what treatment could look like for you or your loved one, at whatever pace you need.

FAQs

Is kratom actually an opioid?

Not exactly, but it acts like one at higher doses. Kratom’s main compounds, mitragynine and 7-hydroxymitragynine, bind to the same mu-opioid receptors in the brain that drugs like morphine do, which is why kratom can produce pain relief and euphoria at higher doses and why stopping it can trigger opioid-like withdrawal. It isn’t classified as an opioid under federal law, but the biology behind it overlaps significantly with drugs that are.

Why is 7-OH considered more dangerous than regular kratom?

Because it’s far more concentrated and far more potent. In the kratom leaf itself, 7-OH makes up less than 2% of the plant’s alkaloid content. The products causing concern now are isolated, concentrated extracts of just that one compound, dosed at levels the natural plant never delivers, which is why the FDA has specifically flagged 7-OH products as a distinct and more serious opioid threat rather than lumping them in with traditional kratom.

Can you overdose on tianeptine?

Yes, and the FDA has documented cases resulting in serious harm and death, particularly when tianeptine is taken at doses far higher than what’s prescribed for depression in the countries where it’s approved, or when it’s combined with other substances like alcohol, benzodiazepines, or opioids. Symptoms of tianeptine toxicity can include slowed or stopped breathing, seizures, and coma, which is why any suspected overdose needs emergency medical attention right away.

What should I do if I think my loved one is dependent on a gas station drug?

Start with a calm conversation rather than a confrontation, since shame tends to push people further into secrecy rather than toward help. It also helps to have a plan in mind before you talk, which might mean reaching out to a treatment center’s admissions team first so you understand what options exist, what detox might involve, and how to bring up treatment in a way that feels supportive instead of accusatory.

Sources

• U.S. Food and Drug Administration. (2025). FDA and Kratom. fda.gov/news-events/public-health-focus/fda-and-kratom
• U.S. Drug Enforcement Administration. Kratom (Drug Fact Sheet). dea.gov/factsheets/kratom
• National Institute on Drug Abuse. (2026). Kratom. nida.nih.gov/research-topics/kratom
• U.S. Food and Drug Administration. (2025). Hiding in Plain Sight: 7-OH Products. fda.gov/news-events/public-health-focus/hiding-plain-sight-7-oh-products
• U.S. Food and Drug Administration. (2025). Tianeptine Products Linked to Serious Harm, Overdoses, Death. fda.gov/consumers/consumer-updates/tianeptine-products-linked-serious-harm-overdoses-death
• El Zahran T, Schier J, Glidden E, et al. (2018). Characteristics of Tianeptine Exposures Reported to the National Poison Data System — United States, 2000–2017. MMWR Morb Mortal Wkly Rep, 67(30), 815–818. cdc.gov/mmwr/volumes/67/wr/mm6730a2.htm
• Counts CJ, Spadaro AV, Cerbini TA, et al. (2024). Notes from the Field: Cluster of Severe Illness from Neptune’s Fix Tianeptine Linked to Synthetic Cannabinoids — New Jersey, June–November 2023. MMWR Morb Mortal Wkly Rep, 73(4), 89–90. cdc.gov/mmwr/volumes/73/wr/mm7304a5.htm