A study by the University of Otago found that 40 percent of dementia patients had anticholinergics to control the symptoms of Parkinson's disease – such as excessive bladder activity and depression.
But leading researcher Dr. Sarmin Bala says they can exacerbate the symptoms of dementia – and should be closely monitored.
She says that patients should receive regular reviews and that alternatives should be provided wherever possible.
Bala says that dangerous drugs are often inadequately prescribed – with some even accessible over the counter.
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