Drug Formulary

This section gives an overview of the commonly used drugs (excluding opioids) to manage symptoms in patients with terminal illnesses. The information includes basic dosage information as well as indications for use and potential side effects. Please note that non-opioid drugs commonly used in palliative care in Singapore are shown here but the list is NOT exhaustive and neither are the side effects nor indications. Doses are for adults only. Please check with pharmacy colleagues for dose adjustments (if any) in renal or liver impairment. Unless otherwise indicated, use water for injection for dilution in continuous subcutaneous infusions.

*For information on opioids, please search and refer to the drugs with their given context.

Risperidone

Route, Dosage and Frequency

ROUTE

DOSAGE AND FREQUENCY

PO 0.5-2 mg at bedtime to b.d. (Drops/Tablets) (max dose 4mg/day) 0.25-0.5mg at bedtime (in elderly)

Other Information

Indications

Delirium, Psychotic disorders.

Side-Effects

Insomnia, Agitation, Anxiety, Headache, Somnolence, Weight gain, Extrapyramidal symptoms (less than typical anti-psychotics).

Remarks

Atypical antipsychotic. Caution for use in patients with dementia (increased mortality), or Parkinson’s disease. Lowest risk of lowering seizure threshold among the atypical anti-psychotics.

Reference 

  • Watson M. Oxford Handbook of Palliative Care. Oxford, NY: Oxford University Press; 2009.

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