GHB / GBL
Phenibut
Street names: Noofen, Phenybut, Party powder
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Anxiety reduction, sociability, mild euphoria
- At high doses: sedation, disinhibition
⚠Key risks
- RAPID TOLERANCE — daily use creates dependence in 2–3 weeks
- Withdrawal is BRUTAL and dangerous: severe anxiety, insomnia, hallucinations, psychosis, seizures — worse than benzodiazepine withdrawal for some
- Overdose: severe sedation, respiratory depression (especially with alcohol/opioids)
- Not reversed by naloxone
- Sold as 'nootropic supplement' — no regulation, no quality control
✚Overdose signs
- Extreme drowsiness, unresponsiveness
- Slow breathing
- Agitation then sedation
- Seizures (in withdrawal)
📋Quick facts
Also known asNoofen, Phenybut, Party powder
CategoryGHB / GBL
Schedule / classNot scheduled US (sold as supplement — illegally); Rx in Russia/Latvia
AppearanceWhite powder, capsules, or 'smart drug' blends sold online/gas stations
Street price~$20–$50 per 50g powder; capsules $0.50–$2 each
Legal statusNot scheduled (sold as supplement — violates FDA rules); Rx-only in Russia, Latvia; restricted Australia
Last updated2026-09-17
Sources: FDA, NIDA, Poison Control
Category comparison — GHB / GBL
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Phenibut | Not scheduled US | RAPID TOLERANCE — daily use creates dependence in 2–3 weeks; Withdrawal is BRUTAL and dangerous: severe anxiety, insomnia, hallucinations, psychosis, seizures — worse than benzodiazepine withdrawal for some | ~$20–$50 per 50g powder |
| Alprazolam (Xanax 2 mg) | Schedule IV | Dependence within weeks; brutal withdrawal (seizures risk); Counterfeit 'bars' increasingly contain fentanyl or bromazolam | ~$2–$10 per 2 mg bar |
| Tianeptine (Gas Station Heroin) | Not federally scheduled | 'Gas station heroin' — produces opioid dependence WITHDRAWAL as severe as oxycodone/heroin; FDA: linked to coma, respiratory depression, seizures, and DEATH | ~$15–$40 per bottle |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does Phenibut look like?
White powder, capsules, or 'smart drug' blends sold online/gas stations
What are the signs of a Phenibut overdose?
Extreme drowsiness, unresponsiveness; Slow breathing; Agitation then sedation Call emergency services immediately.
How addictive is it?
RAPID TOLERANCE — daily use creates dependence in 2–3 weeks Withdrawal can be life-threatening — medical tapering is essential.