Sinemet

Carbidopa · Levodopa

Indicated to manage Parkinson's disease, this combination therapy is utilized to support motor function by replacing depleted dopamine in the central nervous system.

Category
Neurology
Active ingredients
Carbidopa · Levodopa
Supply
Pharmacy
Route
Oral use
Form
Tablet; Prolonged-release tablet
Strengths
10/100 · 25/100 · 25/250mg

Sinemet details

Alternative names
Sinemet Cr
Therapeutic class
Dopaminergic Agent
Pharmacological class
Decarboxylase Inhibitor/Dopamine Precursor
Minor side effects
dyskinesia; nausea; dizziness; dry mouth
Moderate side effects
orthostatic hypotension; confusion; insomnia
Dosage forms
Tablet; Prolonged-release tablet
Administration route
Oral use
Supply category
Pharmacist only, dispensed without a prescription
Manufacturer
MSD
Onset Time
30–60 minutes
Duration
3–6 hours
Storage instructions
Store below 25°C in original packaging.
Drug interactions
antipsychotics; iron supplements; antihypertensives
Age restrictions
Not for paediatric use.
Pregnancy and breastfeeding
Pregnancy: Not recommended. Breastfeeding: Not recommended.
Contraindications

hypersensitivity to ingredients; narrow-angle glaucoma; concurrent use of non-selective mao inhibitors

Precautions and warnings

may cause sudden sleep onset; monitor for impulse control disorders; periodic haematological monitoring advised

Serious side effects

hallucinations, requires immediate medical attention; neuroleptic malignant syndrome, requires immediate medical attention

Patient summary

Indicated to manage Parkinson's disease, this combination therapy is utilized to support motor function by replacing depleted dopamine in the central nervous system.

Mechanism of action

Levodopa is a precursor to dopamine that crosses the blood-brain barrier. Carbidopa prevents peripheral metabolism of levodopa, increasing the amount available for dopamine conversion in the brain.

Where this medicine is registered

  • Singapore
  • Hong Kong
  • Thailand
  • Malaysia
  • Philippines
  • Indonesia
  • Taiwan
  • South Korea
  • Japan
  • Australia
  • New Zealand
  • UAE
  • South Africa

About Sinemet

Sinemet is the standard treatment for Parkinson’s Disease, containing the active ingredients Carbidopa and Levodopa. The same components are also marketed under the brand Sinemet Cr. These tablets are used to manage symptoms and are available in strengths of 10/100, 25/100 and 25/250mg.

Buying Sinemet online

Sinemet is registered across 14 markets including Malaysia, the Philippines and Indonesia, with availability also in Taiwan, South Korea and Japan. As a staple therapy, it remains one of the most ordered options for expats and residents across the region requiring consistent access. Generic Carbidopa and Levodopa are often available as a more affordable solution than the original MSD brand, making it easier for those living away from local medical suppliers to coordinate delivery across these Asian markets.