Summary
Risperidone (also known as Risperdal) is an atypical antipsychotic medication of the benzisoxazole chemical class. Risperidone is prescribed for bipolar disorder, autism, and psychotic disorders, such as in schizophrenia. It is sometimes used as a sedative to reduce the effects of psychedelics like LSD and to induce sleepiness. Benzodiazepines are also used for this purpose.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 0.5-1mg | 1-3mg | 3-6mg | 6mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset |
|---|---|---|---|
| Oral | 18-60 min | 2-8 hrs | 2-4 hrs |
Tolerance
Build-up
develops over 1–4 weeks of daily use; hypnotic tolerance faster than anxiolytic tolerance
Reset
weeks to months depending on half-life and duration of use; taper recommended
Effects
Positive
- Stimulation
- Physical Euphoria
- Pain Relief
Negative
- Motor impairment
- Sweating
- Dry mouth
- Respiratory Depression
- Sedation
- Itchiness
- Pupil Constriction
Positive
- Reduced anxiety
- Anxiety suppression
- Euphoria
- Mood lift
Negative
- Constipation
- Motor control loss
- Emotion suppression
- Thought deceleration
- Dizziness
- Anxiety
Positive
Negative
- Light sensitivity
- Disinhibition
- Appetite Suppression
- Decreased Libido
- Orgasm Suppression
- Acuity Suppression
- Appetite suppression
- Dulled perception
- Increased sexuality
- Visual and auditory hallucinations