âItâs basically over-the-counter heroin,â says the Judge trying to ban tianeptine in Decatur Tianeptine is labeled as a dietary supplement and is sold in most gas stations or convenience stores A Judge in Decatur is joining the group of people pushing to ban a dangerous dietary supplement know By Madison Scarpino | March 9, 2021 at 6:30 PM CST - Updated March 9 at 6:31 PM DECATUR, Ala. (WAFF) - If youâve been to a gas station or convenience store, chances are youâve seen Tianna, Zaza, or Pegasus. These are labeled as dietary supplements but when taken in large quantities, some say the effects replicate heroin.