Abstract
Parkinson's disease (PD) is a complex neurodegenerative disorder with debilitating non-motor symptoms, including gastrointestinal dysfunction, cardiovascular abnormalities, mood and anxiety disorders, cognitive decline, sleep disturbances, respiratory dysfunction, and pain. Despite their significant impact on quality of life, these symptoms are often inadequately addressed. Propolis is a natural bee-derived product, rich in bioactive compounds with anti-inflammatory, antioxidant, immunomodulatory, and neuroprotective properties, which holds potential in PD due to its multitarget and multipathway actions, addressing various underlying mechanisms of non-motor symptom diseases. Preclinical and clinical studies suggest that propolis may influence key pathological mechanisms in PD's non-motor symptoms. Evidence points to its potential benefits in improving cognition, mood disorders, gastrointestinal health, and alleviating cardiovascular and sleep-related issues. Although research on propolis in non-motor symptoms of PD remains scarce, findings from related conditions suggest its ability to influence mechanisms associated with these symptoms. This review underscores the underexplored therapeutic potential of propolis in non-motor symptoms of PD, drawing on existing evidence and advocating for further research to fully assess its role in addressing these symptoms and improving patient outcomes.