SL-164
Aliases: Dcq
Summary
Case reports and user accounts highlight a pronounced tendency toward myoclonic twitching and seizures, especially above approximately 200 mg or when combined with other CNS depressants; emergency benzodiazepines are advised to manage convulsions. Illicit samples may contain residues of the synthesis precursor 4-chloro-o-toluidine, which can cause methemoglobinemia and hematuria. Users report effects similar to GHB and carisoprodol with notable euphoria and muscle relaxation, but seizure risk limits therapeutic potential.
Dose Information
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset |
|---|---|---|---|---|
| Oral | 30-60 min | 15-30 min | 45 min | 1-2 hrs |
| Insufflated | 15-30 min | 10-20 min | 30 min | 1-2 hrs |
Effect Profile
Scores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong anxiolysis, cognitive impairment, and euphoria with mild sedation
Tolerance
Tolerance Decay
Patterns inferred from sedative-hypnotic class (methaqualone/benzodiazepines) and anecdotal reports of rapid tolerance; figures are heuristic and low confidence. Space uses by multiple days to reduce risk.
Cross-Tolerances
Effects
- Physical euphoria
- Anxiolysis
- Muscle relaxation
- Anxiolytic
- Ataxia
- Myoclonic twitching
- Seizures
- Respiratory depression
- Sedation
- Sedative
- Euphoria
- Anxiety suppression
- Dream potentiation
- Cognitive euphoria
- Motor control loss
- Dizziness
- Amnesia
- Memory suppression
- Delirium
- Thought deceleration
- Tactile enhancement
- Increased libido
- Disinhibition
- Acuity suppression
- Double vision
- Dulled perception
- Visual disconnection
- Internal hallucination
- Changes in gravity
- Internal hallucinations