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Carbidopa Dosage

Medically reviewed by Last updated on Jun 5, 2023.

Applies to the following strengths: 25 mg

Usual Adult Dose for Parkinsonian Tremor

Patients on carbidopa-levodopa therapy requiring additional carbidopa:
Initial dose: 25 mg orally with the first dose of carbidopa-levodopa each day
Maintenance dose: Additional doses of 12.5 mg or 25 mg may be given with each dose of carbidopa-levodopa
Maximum dose: 200 mg orally per day

Patients requiring individual titration of carbidopa and levodopa:
Initial dose: 25 mg orally 3 to 4 times a day, given at the same time as levodopa
Maximum dose: 200 mg orally per day


Uses: With carbidopa-levodopa or with levodopa in the treatment of symptoms of idiopathic Parkinson's disease (paralysis agitans), postencephalitic parkinsonism, and symptomatic parkinsonism

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Dose Adjustments

Dose reduction may be required if there is occurrence of involuntary movements.

Concomitant levodopa:



Consult WARNINGS section for additional precautions.

Safety and efficacy have not been established in patients younger than 18 years.


Data not available

Other Comments



Patient advice:

Frequently asked questions

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.