Dyskinesias; nausea; harmless reddish-brown discoloration of urine; muscle pain; diarrhoea. Light-headedness or fainting due to low or high BP; worsening of Parkinson's symptoms, dizziness, drowsiness; vomiting, abdominal pain & discomfort, heartburn, dry mouth, constipation; inability to sleep, hallucinations, confusion, abnormal dreams (including nightmares), tiredness; mental changes, including problems w/ memory, anxiety & depression (possibly w/ suicidal thoughts); heart or artery disease events (eg, chest pain), irregular heart rate or rhythm; more frequent falling; dyspnoea; increased sweating, rashes; muscle cramps, swelling of legs; blurred vision; anaemia; decreased appetite &/or wt; feeling of weakness, fatigue; abnormal gait; headache, joint pain; UTI.