Tianeptine is sold under a range of brand names in the U.S., most commonly as capsules, tablets, and liquid “elixirs” found at gas stations, convenience stores, vape shops, and online retailers. The most widely known product line is Neptune’s Fix, which was sold as Neptune’s Fix Elixir, Neptune’s Fix Extra Strength Elixir, and Neptune’s Fix Tablets before a voluntary recall in January 2024. Other commonly reported brands include Tianna (sometimes sold as Tianna Red or Tianna White), ZaZa Red, and TD Red. These products are typically marketed as dietary supplements or mood enhancers, but the FDA has made clear that tianeptine is not approved for any medical use and does not qualify as a dietary ingredient.
How These Products Are Labeled
Tianeptine products rarely advertise the drug’s name prominently on the front of the package. Instead, they use branding that suggests a natural supplement or energy booster, with claims about improving brain function, relieving anxiety, treating depression, managing pain, or even helping with opioid withdrawal. The actual ingredient list may reference tianeptine sodium or tianeptine sulfate, the two chemical forms most commonly used in consumer products.
The sodium form acts faster, hits harder, and wears off more quickly. The sulfate form is marketed by vendors as slower acting and longer lasting, with less intense effects. In practice, many product labels don’t specify which form they contain, and the actual tianeptine content can vary significantly between batches. This inconsistency is part of what makes these products dangerous.
Where Tianeptine Products Are Sold
The FDA has described tianeptine as part of a “gas station heroin” trend, a nickname that reflects both where these products are sold and how they act in the body. You’ll find them behind the counter at gas stations, convenience stores, smoke shops, and vape shops, often displayed near kratom products, energy supplements, or sexual enhancement pills. They’re also widely available from online retailers, sometimes shipped as bulk powder for people who measure their own doses.
In January 2024, the FDA sent letters directly to convenience store and gas station trade organizations urging retailers to pull Neptune’s Fix and all other tianeptine products from shelves. Despite this, products continue to appear under new brand names or from new distributors. The FDA has also issued import alerts to intercept tianeptine shipments at U.S. borders and sent warning letters to companies selling tianeptine as a dietary supplement or unapproved drug.
Why Tianeptine Acts Like an Opioid
Tianeptine was originally developed as an antidepressant in other countries, where it’s available by prescription at low, controlled doses. Its primary effect involves modulating glutamate, a brain chemical involved in mood and cognition. But tianeptine also activates the same receptors that opioids like morphine and fentanyl target. At the doses people take from over-the-counter products, which are often many times higher than the prescribed dose used abroad, tianeptine acts as a full opioid receptor agonist. That means it triggers dopamine release, produces euphoria, and carries a real risk of overdose.
This opioid activity is what drives both the appeal and the danger. People who use tianeptine products report effects similar to prescription painkillers, including pain relief, a sense of calm, and a euphoric high. It’s also what makes the drug addictive and what makes stopping it so difficult.
Withdrawal Can Start Within Hours
Tianeptine dependence can develop remarkably fast. In one documented case, a patient developed withdrawal symptoms after just two weeks of use, needing to re-dose every four to six hours to keep symptoms at bay. When tianeptine wears off, the withdrawal looks a lot like opioid withdrawal.
Poison control data from 2000 to 2017 found that the most common tianeptine withdrawal symptoms were agitation (33%), nausea (33%), vomiting (19%), rapid heart rate (19%), and high blood pressure (14%). Tremors and excessive sweating, each reported in about 10% of cases, were more distinctive to tianeptine withdrawal specifically. Patients have also reported constipation, urinary retention, chest pain, shortness of breath, blurry vision, fever, chills, and loss of appetite. Symptoms can begin as soon as 12 hours after the last dose.
FDA Warnings and Recalls
The FDA’s involvement with tianeptine has escalated steadily. In November 2023, the agency issued its first broad consumer warning about Neptune’s Fix products after receiving reports of seizures and loss of consciousness leading to hospitalization. By January 2024, those reports had expanded to include deaths, and Neptune Resources, LLC agreed to recall all Neptune’s Fix products. A second distributor, Super Chill Products, also recalled its Neptune’s Fix stock in February 2024, though it did not issue a public notification to consumers.
As of May 2025, the FDA’s position is unambiguous: tianeptine is not approved for any medical use, is not recognized as safe for use in food, and is not a dietary ingredient. The agency continues to receive severe adverse event reports from tianeptine products beyond just the Neptune’s Fix line.
State Bans Are Expanding
Because tianeptine is not federally scheduled as a controlled substance, regulation has largely fallen to individual states. Several states have already classified tianeptine as a controlled substance or banned its sale outright. In early 2025, Delaware advanced legislation to classify tianeptine as a Schedule I controlled substance, which would make it illegal to sell, possess, or distribute. The patchwork of state laws means that a product banned in one state may still be legally sold in a neighboring one, which is part of why online sales remain a persistent source.
If you have tianeptine products at home, checking your state’s current legal status is worthwhile, as the regulatory landscape is shifting quickly. Products that were legal to buy six months ago may no longer be, and new brand names continue to appear as manufacturers try to stay ahead of enforcement.