Medicine
L-DOPA
SaveLevodopa, the immediate biosynthetic precursor to dopamine, is the gold-standard treatment for Parkinson's disease. Always co-administered with a peripheral decarboxylase inhibitor (carbidopa or benserazide).
Quick verdict
The most effective treatment for Parkinson's motor symptoms. Long-term use is complicated by motor fluctuations and dyskinesias.
Evidence score
A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.
What the research shows
Decades of RCT and clinical data confirming superior efficacy for Parkinson's motor symptoms versus dopamine agonists and other agents. Wearing-off and dyskinesia emerge in most patients after 5–10 years. Combined with carbidopa to prevent peripheral conversion and nausea.
Benefits
- Gold-standard treatment for Parkinson's motor symptoms
- Most effective available therapy for bradykinesia and rigidity
- Dramatic and rapid symptomatic improvement
Dosage notes
Carbidopa/levodopa 25/100 mg three times daily is a common starting regimen. Highly individualized titration.
Side effects
- Nausea
- Dyskinesia with chronic use
- Orthostatic hypotension
- Hallucinations
- Wearing-off fluctuations
Who should be cautious
Prescription-only. Interactions with MAO inhibitors, antipsychotics, and protein-rich meals. Psychiatric side effects including hallucinations and impulse-control disorders.
What this page cannot tell you
Motor complications are nearly inevitable with long-term use. Timing of initiation relative to disease stage is an active clinical debate.
Leaderboard scores
- Mood50
- Energy45
- Focus35
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