Levodopa
Levodopa is a dopamine precursor used primarily to treat Parkinson's disease, a progressive neurological disorder affecting movement control. It works by converting to dopamine in the brain, helping to restore the neurotransmitter levels that become depleted in Parkinson's patients.
Levodopa is a cornerstone treatment for Parkinson's disease that replenishes brain dopamine levels to improve motor symptoms like tremor, rigidity, and slow movement.
Key facts at a glance
- ATC
- N04BA01
- RxNorm
- 6375
- Generic
- Levodopa
- Class
- atc-n04
- Brands
- Stalevo, Rytary, Duopa, Inbrija, Dhivy, Crexont, Vyalev, Sinemet
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- injection, capsule, tablet, suspension, powder
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Dosage and administration
- Usual dose
- 500mg twice daily
- Maximum
- consult physician
- Frequency
- every 12 hours
- Instructions
- Follow physician instructions
- Duration limits
- as prescribed
- Monitoring
- standard
- Usual dose
- 250mg twice daily
- Maximum
- consult physician
- Frequency
- every 12 hours
- Instructions
- Follow physician instructions
- Duration limits
- as prescribed
- Monitoring
- standard
- Usual dose
- 400mg daily
- Maximum
- consult physician
- Frequency
- once daily
- Instructions
- Follow physician instructions
- Duration limits
- as prescribed
- Monitoring
- standard
Overdose information
Special Populations
10 groupspregnancy
first trimesteravoid if possible
avoid use during pregnancy unless benefits outweigh risks to the mother
regular fetal monitoring and ultrasound assessments
Use of this medication in this population requires careful consideration of risks and benefits.
pregnancy
second trimesteruse lowest effective dose
continue only if absolutely necessary for maternal health
fetal growth monitoring
Use with caution and monitor for adverse effects.
pregnancy
third trimesteruse lowest effective dose
avoid near term if possible, consider dose reduction
fetal monitoring, assess for preterm labor
Use with caution and monitor for adverse effects.
lactation
breastfeedingdiscontinue breastfeeding
levodopa is excreted in breast milk, breastfeeding should be avoided
infant monitoring for sedation and feeding problems
Use of this medication in this population requires careful consideration of risks and benefits.
geriatric
elderlystart with lower doses, titrate slowly
monitor for orthostatic hypotension, confusion, and hallucinations; increased sensitivity to side effects
regular blood pressure monitoring, cognitive assessment
Use with caution and monitor for adverse effects.
pediatric_age
children adolescentsgenerally not recommended
levodopa is not typically indicated for pediatric patients except in specific neurological disorders; use only under specialist supervision
careful monitoring of growth and development
Use of this medication in this population requires careful consideration of risks and benefits.
renal_impairment
mild renal impairmentno initial dose adjustment needed
monitor renal function during treatment, may need dose adjustment with disease progression
regular renal function monitoring
Use with caution and monitor for adverse effects.
renal_impairment
moderate severe renal impairmentreduce dose or increase dosing interval
use with caution, consider dose reduction by 25-50% in severe impairment
frequent renal function monitoring, watch for accumulation
Use with caution and monitor for adverse effects.
hepatic_impairment
mild hepatic impairmentno initial dose adjustment typically needed
monitor liver function tests regularly
periodic liver function monitoring
Use with caution and monitor for adverse effects.
hepatic_impairment
moderate severe hepatic impairmentreduce dose
use with caution, consider dose reduction; avoid in severe hepatic impairment if possible
regular liver function tests and clinical monitoring
Use with caution and monitor for adverse effects.
Statistics and clinical data
FDA approval year
First FDA approval for Levodopa (Sinemet)
Drug class
ATC code N04BA01 - Antiparkinson drugs
Primary indication
Gold standard treatment for motor symptoms of Parkinson's disease
Motor symptom improvement
Percentage of patients experiencing significant motor symptom improvement
Levodopa is indicated for the treatment of Parkinson's disease, including the idiopathic form (paralysis agitans) and post-encephalitic parkinsonism. It may also be used in symptomatic parkinsonism following carbon monoxide or manganese intoxication.
Levodopa is a metabolic precursor of dopamine that crosses the blood-brain barrier. Once in the brain, it is decarboxylated by the enzyme aromatic L-amino acid decarboxylase (DOPA decarboxylase) to form dopamine. The increased dopamine levels help restore dopaminergic neurotransmission in the nigrostriatal pathway, thereby reducing the motor symptoms of Parkinson's disease. It is often combined with a peripheral decarboxylase inhibitor (carbidopa or benserazide) to minimize peripheral side effects and increase brain availability.
Levodopa may cause side effects including nausea, vomiting, hypotension, and psychiatric effects. Long-term use is associated with motor complications such as 'wearing-off' phenomena and dyskinesias. Abrupt discontinuation should be avoided. Use with caution in patients with cardiovascular disease, glaucoma, or history of peptic ulcer disease. Drug interactions may occur with antipsychotics, antihypertensives, and iron supplements.
Contraindications
Conditions and patient states where this medication should be avoided or used with caution.
Do not use (1)
Known allergy to this medication or its components
Use caution (1)
Consult healthcare provider for benefits vs risks assessment
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy