DOSINA

Gabapentin

Depressant

An analogue of GABA also known as Neurontin, originally developed to treat epilepsy. Commonly prescribed for neuropathic pain, it also has pronounced anxiolytic effects leading to its use in treating anxiety disorders.

NeurontinGabaroneGraliseneurontin

Dose and effect data: PsychonautWiki (CC BY-SA 4.0) and TripSit (PolyForm Noncommercial 1.0.0).

Before you dose

⚠This substance's dose is not reliably weight-scaled - the ranges shown are population figures. Sensitivity varies far more between people than body mass explains.
⚠This substance has combinations that are life-threatening. Check the Interactions tab before mixing anything.

Dose

Published population range

Threshold200 mg
Light200–900 mg
Common900–1500 mg
Strong1500–2400 mg
Heavy / risk zone≥ 2400 mg

No weight-based model for this substance — published ranges only.

Check an amount you already have

Timeline (oral)

Onset30–120 minutes
Peak120–180 minutes
Total360–600 minutes

Bars show relative time in each phase, scaled to the total duration. Each phase keeps its colour in the list above.

Expected effects

  • Anxiolysis
  • Relaxation
  • Mild mood lift

Possible side effects

  • Dizziness and drowsiness
  • Sedation
  • Dependence with regular use
  • Withdrawal anxiety
  • Respiratory depression when combined with opioids

Known toxicity

  • low toxicity

Harm reduction

  • Depressants are the class where mixing kills most often: alcohol, benzodiazepines, GHB/GBL and opioids all suppress breathing when combined.
  • Never use alone. If you use alone, set up a check-in call with someone who will call emergency services if you do not answer.
  • Measure liquid doses with a syringe. Bottle caps, teaspoons and 'glugs' are how people take ten times the intended dose.
  • Sedation can be delayed. Do not re-dose before you can feel the previous dose fully.
  • Do not stop daily benzodiazepine or alcohol use abruptly - withdrawal can cause seizures and is potentially fatal. Taper with medical help.
  • Signs that someone needs emergency help: breathing slower than one breath every 4-5 seconds, blue lips, snoring that will not stop, unrousable, vomiting while unconscious.

Identify what you have

Marquisno color change (254)
Meckeno color change (221)
Mandelinno color change (139)
Liebermannno color change (73)
Froehdeno color change (241)
Ehrlichno color change (168)
Robadope (reacts)pink (11)
Simon's (reacts)purple (15)
Hofmannno color change (137)
Zimmermann (reacts)no change / faint yellow (20)
Morris (reacts)pale green (77)

Reagent tests show what a substance probably is, not how pure it is or what else is in the mix. Fentanyl and nitazene test strips are the only reliable check for those, and quantitative lab testing is better than both.

Mixing

OpioidsDangerous

See interaction notes for details.

DepressantsDangerous

See interaction notes for details.

Tolerance, dependence and detection

Toleranceback to baseline after 7-14 days
After-effects1-6

Sources

• PsychonautWiki — Gabapentin (CC BY-SA 4.0)
https://psychonautwiki.org/wiki/Gabapentin

• TripSit wiki — Gabapentin (PolyForm Noncommercial)
https://wiki.tripsit.me

Dosina is educational harm-reduction information, not medical advice. Doses are population ranges from published sources and cannot account for your tolerance, health conditions or what is actually in your substance. Possession and use may be illegal where you live.