Parkinson's drug tested for apathy falls short

This study looked at whether istradefylline, a drug already approved for motor symptoms in Parkinson's disease, could also help with apathy—a common problem where people lose interest and motivation. The study planned to track changes in physical activity and engagement over 12 weeks, but it was stopped early and only 8 people took part. Because it was so small and incomplete, we cannot draw clear conclusions about whether the drug helps with apathy.