Summary
Naltrexone is an opiate antagonist used in the treatment of opiate and alcohol addiction. It blocks the effects of opiates so that if a user chooses to take an opiate after taking naltrexone, they do not experience much, if any, effect. This helps improve abstinence in those who can maintain taking the daily dose of naltrexone.
Tolerance
Build-up
develops within days of regular use; analgesic tolerance faster than respiratory depression tolerance
Reset
7–14 days for partial reset; full reset may take weeks — tolerance loss greatly increases overdose risk
Effects
Positive
- Physical euphoria
- Muscle relaxation
- Anxiolytic
Negative
- Motor impairment
- Nausea
- Respiratory depression
- Sedation
- Sedative
- Dystaxia
- Itchiness
Positive
- Reduced anxiety
- Anxiety suppression
- Cognitive euphoria
- Euphoria
Negative
- Dizziness
- Compulsive redosing
- Amnesia
- Thought deceleration
- Motor control loss
- Constipation
Positive
- Increased music appreciation
- Increased libido
Negative
- Disinhibition
- Appetite suppression
- Dehydration
- Light sensitivity
- Double vision
- Acuity suppression
- Dulled perception
- Internal hallucinations