Library
SL-164
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.
Also known as: Dcq, Dicloqualone, Quinazolinone sedative
Classification
- Chemical: Medicine
- Chemical: Quinazolinone
- Psychoactive: Depressant
- Tag: GABAergic
- Tag: Methaqualone analogue
- Tag: Research-Chemical
- Tag: Sedative
Effects
- Physical Euphoria
- Anxiolysis
- Muscle Relaxation
- Sedation
- Ataxia
- Myoclonic Twitching
- Euphoria
- Motor Control Loss
- Dizziness
- Amnesia
- Memory Suppression
- Delirium
- Tactile Enhancement
- Disinhibition
- Open Eye Visuals
- Dulled Perception
- Blurred Vision
- Increased Libido
Routes of Administration
Oral
Dosage
- Threshold: 30 mg
- Light: 50-100 mg
- Common: 100-300 mg
- Strong: 300-500 mg
- Heavy: 500+ mg
Duration
- Onset: 0.5-1.5 h
- Comeup: 0.25-0.5 h
- Peak: 2-3 h
- Offset: 3.5-5 h
- After Effects: 5-13 h
- Total Duration: 4-6 h
Insufflated
Dosage
- Threshold: 20 mg
- Light: 30-60 mg
- Common: 60-150 mg
- Strong: 150-300 mg
- Heavy: 300+ mg
Duration
- Onset: 0.05-0.25 h
- Comeup: 0.17-0.33 h
- Peak: 1-2 h
- Offset: 1-2 h
- After Effects: 4-12 h
- Total Duration: 3.5-6 h
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
Links
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