Gas Station Heroin (Tianeptine): Effects & Legality
Gas station heroin is a street name for tianeptine, an opioid-like substance sold in convenience stores, smoke shops, and online as a dietary supplement or nootropic. It is not heroin. The nickname stuck because tianeptine activates the same mu-opioid receptors that heroin and morphine target.
Tianeptine is not approved by the U.S. Food and Drug Administration for any medical use. It reaches shelves under brand names including Zaza, Zaza Red, Tianaa, Pegasus, TD Red, and Neptune’s Fix.
The packaging resembles an energy supplement. The pharmacology does not. Poison center exposures and severe hospitalizations have climbed sharply as these products spread through retail.
Key Highlights
- Tianeptine is a full mu-opioid receptor agonist that is not FDA-approved, is not generally recognized as safe, and does not meet the legal definition of a dietary ingredient.
- U.S. poison center exposures rose from 6 in 2014 to 389 in 2023, according to national poison data reported through federal surveillance.
- A 2023 New Jersey cluster tied to Neptune’s Fix produced 20 exposure calls involving 17 patients, with 13 admitted to intensive care and 7 requiring intubation, per CDC reporting.
- As of August 2026, tianeptine is not federally scheduled, though the Drug Enforcement Administration has formally proposed Schedule I placement.
- At least 19 states had scheduled tianeptine as a controlled substance by the end of 2025, with additional states continuing to act.
What is gas station heroin?
The phrase gas station heroin describes tianeptine products marketed as mood support, brain boosters, focus aids, or research chemicals. They sit beside energy shots and vitamins, which creates a false impression of safety. Retail availability is not evidence of safety, purity, or legality.
Related slang has followed the same product. Terms such as convenience store heroin, truck stop heroin, liquid heroin, and over-the-counter heroin all point toward the same category of unregulated opioid-acting supplements.
These items belong to a wider group of gas station drugs that includes sexual enhancement pills, unregulated stimulants, and plant-derived opioids. Tianeptine is among the most medically serious products in that group.
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What are the Other names of gas station heroin?
The other names of gas station heroin are tianeptine, Zaza, Zaza Red, Tianaa, Pegasus and others. Products arrive as capsules, pills, powders, and flavored elixir shots. Color coding is common, with red, green, white, and silver versions sold under the same brand family.
| Brand name | Common form | Typical marketing claim |
|---|---|---|
| Zaza, Zaza Red, Za Za | Capsules and pills | Mood support, relaxation, energy |
| Tianaa, Tianaa Red, Tianaa Green | Capsules | Focus, wellness, mood |
| Pegasus, Pegasus Red | Capsules and pills | Dietary supplement, brain function |
| TD Red | Capsules and shots | Energy, mood elevation |
| Neptune’s Fix | Liquid elixir shots | Mood and cognitive support |
Is tianeptine an opioid?
Tianeptine is a full agonist at the mu-opioid receptor and a weak agonist at the delta-opioid receptor. That opioid action, not serotonin activity, produces the euphoria and sedation reported at high doses.
Tianeptine was developed in France during the 1960s and classified as an atypical tricyclic antidepressant. Its structure resembles older tricyclics, though its pharmacology differs. At therapeutic doses it modulates glutamate signaling and influences serotonin activity.
How strong is tianeptine compared to morphine?
Tianeptine binds the mu-opioid receptor with far lower affinity than morphine. Milligram for milligram at ordinary doses, it is the weaker opioid. Prescribed amounts abroad stay small, and the clinical effects remain subtle.
Dose changes the entire picture. The FDA warns that at the quantities common in misuse, tianeptine can prove more potent than morphine and other addictive opioids, including fatal respiratory depression. Danger comes from escalation and rapid tolerance, not potency per milligram.
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Tianeptine side effects and overdose
Tianeptine side effects reflect both its opioid activity and the unpredictable contents of unregulated products. Risk rises sharply when these products are combined with alcohol, benzodiazepines, or other depressants. Because tianeptine acts on opioid receptors, naloxone may reverse overdose effects when breathing has slowed or stopped.
- Agitation, confusion, drowsiness, and slurred speech
- Respiratory depression, coma, and death
- Rapid or irregular heart rate and elevated blood pressure
- Seizures, nausea, vomiting, sweating, and tremor
Tianeptine withdrawal and dependence
Stopping abruptly can trigger withdrawal that resembles opioid discontinuation, including intense cravings, diarrhea, muscle pain, insomnia, and anxiety. Many people are surprised, because they never considered a supplement capable of producing dependence.
Tolerance builds quickly, which pushes users toward larger and more frequent doses. That pattern of escalating drug tolerance mirrors early opioid use disorder and often precedes daily use.
Some people begin taking tianeptine specifically for opiate withdrawal relief, treating it as a legal substitute. That approach frequently replaces one dependence with another, since withdrawal from tianeptine itself can prove severe.
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Tianeptine vs kratom and 7-OH
Tianeptine is not the only opioid-acting product sold this way. The same stores stock kratom and its concentrated derivative 7-hydroxymitragynine, shortened to 7-OH, which also binds opioid receptors and carries dependence risk.
Kratom is sometimes marketed with phrases like nature’s morphine, a description reflecting its opioid-receptor activity rather than any official classification. The opium poppy carries similar informal labels. Neither phrase indicates safety or regulatory approval.
| Substance | Origin | Opioid receptor activity | U.S. federal status |
|---|---|---|---|
| Tianeptine | Synthetic antidepressant | Full mu-opioid agonist | Unapproved, Schedule I proposed |
| Kratom | Plant leaf, Mitragyna speciosa | Partial mu-opioid agonist | Unscheduled, FDA advises against use |
| 7-OH | Concentrated kratom derivative | Potent mu-opioid agonist | Unscheduled, FDA scheduling recommended |
Where tianeptine is banned in the United States
Federal status is shifting. As of August 2026, tianeptine is not scheduled under the Controlled Substances Act. The FDA still treats sales as unlawful, because the substance is unapproved and fails to qualify as a dietary ingredient.
The DEA published a proposed rule placing tianeptine in Schedule I, following a formal recommendation from the Department of Health and Human Services in July 2025. States acted faster, with Michigan enacting the first ban in 2018.
| Level of government | Current status |
|---|---|
| Federal, FDA | Not approved for any use; unlawful to market or sell as a supplement |
| Federal, DEA | Not yet scheduled; Schedule I placement formally proposed |
| State, Schedule I examples | Alabama, Delaware, Florida, Georgia, Indiana, Kansas, Kentucky, Louisiana, Minnesota, Nebraska, Nevada, Ohio, Utah, Virginia |
| State, Schedule II examples | Arkansas, Michigan, North Carolina, Oklahoma, Tennessee |
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Treatment for Substance Abuse Disorder
Dependence often develops quietly, because purchases look ordinary and no prescription is involved. Families frequently notice behavioral changes before identifying a substance. Medical guidance matters before stopping, since abrupt cessation drives people back to higher doses for relief.
Nashoba Springs Recovery Center serves adults in Groton, Massachusetts, through day treatment programming that runs Monday through Friday from 9:00 AM to 3:00 PM. Length of stay typically spans 30 to 45 days, with weekly individual sessions alongside a primary therapist.
A step-down intensive outpatient program offers three, four, or five days per week across morning, afternoon, and evening blocks. Evening groups run Monday through Thursday from 6:00 PM to 9:00 PM, which accommodates work and family schedules. A weekly outpatient program pairs one group session with one individual session.
Medication-assisted treatment is available through a licensed clinical psychiatrist for those who want it. Integrated care addresses co-occurring anxiety, depression, and PTSD alongside substance use. Family therapy, a family support group, and monthly evening family meetings extend support beyond the individual client.
References
- U.S. Food and Drug Administration. (2025). New “gas station heroin” tianeptine product trend.
- El Zahran, T., Schier, J., Glidden, E., Kieszak, S., Law, R., Bottei, E., Aaron, C., King, A., and Chang, A. (2018). Characteristics of tianeptine exposures reported to the National Poison Data System, United States, 2000-2017. Morbidity and Mortality Weekly Report, 67(30), 815-818. CDC
- Counts, C. J., Spadaro, A. V., Cerbini, T. A., 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. Morbidity and Mortality Weekly Report, 73(4), 89-90. CDC
- Drug Enforcement Administration, Diversion Control Division. (2025). Tianeptine. DEA
- Samuels, B. A., Nautiyal, K. M., Kruegel, A. C., et al. (2017). The behavioral effects of the antidepressant tianeptine require the mu-opioid receptor. Neuropsychopharmacology, 42(10), 2052-2063.
- Legislative Analysis and Public Policy Association. (2025). Novel psychoactive substances: Tianeptine.
