“Gas station heroin” isn’t heroin. It’s the nickname for a group of unregulated products, most often containing tianeptine or 7-hydroxymitragynine (7-OH), sold legally in convenience stores, smoke shops, and gas stations under names like ZaZa, Pegasus, and Neptune’s Fix. The name stuck because these substances act on opioid receptors and can produce dependency that looks a lot like opioid withdrawal.
What “Gas Station Heroin” Actually Is
Tianeptine is the original substance associated with the nickname. Researchers developed it decades ago as an antidepressant, and some countries still use it for that purpose. The FDA has not approved tianeptine in the United States. At high doses, it activates opioid receptors and can contribute to compulsive use.
A newer concern is 7-OH, a compound derived from kratom. Manufacturers increasingly include it in “extract” products marketed for energy or mood enhancement. Companies sell both substances under changing brand names. This makes the products harder to track and easier to conceal.
Why It’s Sold Legally (and What’s Changing)
These products exist in a regulatory gray zone. The FDA has issued warnings about tianeptine, and a growing number of states have moved to ban or restrict it, but enforcement is inconsistent and the products keep reappearing under new names. That’s how something with real opioid-like risk ends up sitting next to energy drinks on a convenience store shelf.
What It Does to the Body
At doses commonly found in these products, tianeptine and 7-OH can produce opioid-like effects. These effects may include euphoria, sedation, and pain relief. Tolerance can develop quickly, causing some people to increase their dose over time. Higher doses can increase the risk of respiratory depression. This dangerous effect can also occur during traditional opioid overdoses.
Naloxone may help during a suspected overdose involving these substances. However, its effectiveness against tianeptine is less established than its effectiveness against traditional opioids. If you suspect an overdose, administer naloxone if available. Call 911 immediately, even if the person appears to improve.
Withdrawal and Dependency
Because these substances act on opioid receptors, withdrawal can mirror opioid withdrawal closely: anxiety, muscle aches, nausea, insomnia, and intense cravings. The severity catches a lot of people off guard, since they didn’t think of what they were using as a “real” opioid. That mismatch between expectation and reality is often what keeps someone using instead of stopping — the withdrawal is too uncomfortable to push through alone, so medical detox usually isn’t optional, it’s necessary.
Signs Someone Is Using
Watch for empty packaging from unfamiliar brands, especially products purchased at gas stations or smoke shops. Mood swings between doses can also signal a problem. Other warning signs include pinpoint pupils, unusual drowsiness, or other opioid-like symptoms. Needing more of the product to feel normal may also indicate growing dependence.
Treatment for Tianeptine or 7-OH Addiction
Treatment starts with a medically supervised detox, given how uncomfortable and potentially risky unsupervised withdrawal can be. From there, the path usually looks similar to opioid treatment more broadly: a structured level of care like a Partial Hospitalization Program or Intensive Outpatient Program, paired with medication-assisted treatment where appropriate and behavioral therapy to address what’s driving the use in the first place.
Aftermath’s opioid addiction treatment programs address complex substance use, including drugs that cross categories and carry serious dependence risks.
Getting Help in Massachusetts
If you’re seeing these signs in yourself or someone you care about, don’t wait for it to get worse. Detoxing from a substance like this without medical support can be dangerous. Aftermath Treatment Center serves Wakefield, Salem, Lynn, and Lexington with treatment built around exactly this kind of situation. Call 855-795-1226 to get started.
