Summary
Mephenaqualone is a central nervous system (CNS) depressant of the quinazolinone class that acts as a sedative and hypnotic. It is an analogue of methaqualone, sharing a similar chemical structure and pharmacological effects.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 0.5-1.5mg | 1.5-2.5mg | 2.5-4mg | 4mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | After Effects |
|---|---|---|---|---|---|
| Oral | 30-42 min | 6-12 min | 2-4 hrs | 10-15 hrs | 6-12 hrs |
Tolerance
Build-up
develops over 1–4 weeks of regular use
Reset
days to weeks depending on duration of use
Effects
Positive
- Muscle relaxation
- Physical euphoria
- Anxiolytic
- Muscle Relaxant
Negative
- Motor impairment
- Respiratory depression
- Sedation
- Sedative
- Dystaxia
- Hypnotic
Positive
- Reduced anxiety
- Anxiety suppression
- Dream potentiation
- Cognitive euphoria
Negative
- Motor control loss
- Amnesia
- Thought deceleration
- Dizziness
- Compulsive redosing
- Constipation
Positive
- Increased libido
- Tactile enhancement
Negative
- Disinhibition
- Acuity suppression
- Double vision
- Dulled perception
- Visual disconnection
- Internal hallucination
- Changes in gravity
- Internal hallucinations