Treatment of Tremors in Parkinson's Disease

First-Line Pharmacological Treatment

The American Academy of Neurology recommends levodopa/carbidopa as the first-line treatment for tremors in Parkinson's disease patients, as it is the most effective medication for treating motor symptoms including tremor 1
For optimal absorption, levodopa should be taken at least 30 minutes before meals to avoid interactions with dietary proteins that can reduce efficacy 1

Both subthalamic nucleus (STN) and globus pallidus internus (GPi) deep brain stimulation (DBS) are effective for motor symptom control including tremor 2, 3
If medication reduction is a primary goal, STN DBS is preferred 3
If there are concerns about cognitive decline or depression, GPi DBS may be more appropriate 2, 4
Magnetic resonance-guided focused ultrasound (MRgFUS) is an emerging incisionless option for medication-resistant tremor that doesn't require surgical implantation 5

Protein redistribution diets (consuming most protein later in the day) can improve motor function in patients experiencing motor fluctuations on levodopa 1
Monitor for common side effects of levodopa including nausea, vomiting, abdominal pain, and hyperhomocysteinemia, especially in older patients 1

Avoid strict low-protein diets as they may lead to nutritional deficiencies without evidence-based benefits 1
Increasing doses of levodopa over time are associated with a higher risk for malnutrition, requiring careful monitoring 1