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Carbidopa-Levodopa

Sinemet

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Sourced from published veterinary references. Awaiting credentialed clinical reviewer — our editorial process.

Drug Class

Neurological

Routes

PO

Indications

Investigational

Mechanism of Action

Levodopa is converted to dopamine in the CNS. Carbidopa inhibits peripheral DOPA decarboxylase, reducing peripheral side effects and increasing CNS levodopa availability.

Side effects & warnings

GI upset common. May cause behavioral changes, dyskinesia. Very limited veterinary use — primarily investigational for movement disorders.

Species with Carbidopa-Levodopa dosing data (2 dose rules)

Cat (Domestic)Dog (Domestic)

Species references:All Cat (Domestic) drugsAll Dog (Domestic) drugs

Evidence levels across 2 dose rules

Anecdotal×2

Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.

Backed by a published source

  • · Plumb's Veterinary Drug Handbook, 9th Ed

Sample dosing (2 of 2 cited rules)

A dog/cat sample is shown here. Cited dosing for all 2 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.

SpeciesRouteDoseFrequencyEvidenceSource
Dog (Domestic)PO2–5 mg/kgq8h (levodopa component)AnecdotalPlumb's Veterinary Drug Handbook, 9th Ed
Cat (Domestic)PO1–3 mg/kgq8h-q12h (levodopa component)AnecdotalPlumb's Veterinary Drug Handbook, 9th Ed

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