SL-164
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 1 source
- 2 ROAs with full dose ladders
- duration data present
- 17 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
- 1 source
- 2 ROAs with full dose ladders
- duration data present
- 17 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
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
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 50-100mg | 100-250mg | 250-400mg | 400mg+ |
| Insufflated | 30-60mg | 60-120mg | 120-200mg | 200mg+ |
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset | Total |
|---|---|---|---|---|
| Oral | 30-90 min | 2-3 hrs | 1-2 hrs | 4-6 hrs |
| Insufflated | 30-90 min | 2-3 hrs | 1-2 hrs | 4-6 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
Acute tolerance: develops within a single session — the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
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
Combinations
Cross-Check SL-164 with another substanceHelpful Links
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for SL-164? Let us know. Reports are reviewed by moderators — this is not posted publicly.