Levodopa/Carbidopa Retard Teva (Carbidopa, Levodopa)

Levodopa, the active ingredient in Levodopa/Carbidopa Retard Teva, is an antiparkinson agent presented as an oral tablet for oral use. Combined with carbidopa, it treats Parkinson's disease and Parkinsonian syndromes in adults by increasing dopamine availability in the brain, helping to improve motor function and reduce rigidity.

GNH USA supplies Levodopa/Carbidopa Retard Teva as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The product complies with EU marketing authorisation standards and undergoes rigorous quality control to ensure consistency and safety.

Levodopa/Carbidopa is indicated for disorders of the dopaminergic system, primarily Parkinson’s disease and related Parkinsonian syndromes. - Parkinson's disease: improves motor symptoms such as bradykinesia, rigidity, and tremor. - Parkinsonian syndrome: alleviates motor deficits in secondary Parkinsonism. - Levodopa‑responsive Parkinsonism: restores dopamine levels to reduce off‑periods and improve daily functioning.

Levodopa/Carbidopa may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects: - Nausea: mild to moderate gastrointestinal upset. - Vomiting: occasional emesis. - Orthostatic hypotension: dizziness upon standing. - Dyskinesia: involuntary movements. - Insomnia: difficulty sleeping. - Dry mouth: reduced salivation.

Serious or Rare Side Effects: - Neuroleptic malignant syndrome: life‑threatening reaction with fever and rigidity. - Severe psychiatric disturbances: hallucinations or psychosis. - Cardiac arrhythmias: irregular heart rhythm. - Severe hypotension: marked blood pressure drop. - Allergic reactions: rash, pruritus, or anaphylaxis.

When prescribing Levodopa/Carbidopa, clinicians should observe several precautionary measures to minimise risk. - Dose titration: start low and increase gradually to balance efficacy and side effects. - Monitor renal function: adjust in patients with impaired renal clearance. - Assess cardiovascular status: watch for orthostatic hypotension and arrhythmias. - Evaluate psychiatric history: risk of hallucinations or psychosis may be higher. - Review concomitant medications: avoid drugs that interfere with dopamine metabolism. - Store at ambient temperature: keep below 25 °C in the original container, protect from moisture.

Levodopa/Carbidopa interacts with several medicines; awareness of the interaction level guides clinical decisions.

Major Interactions (Avoid): - Non‑selective MAO inhibitors: can cause hypertensive crisis. - Antipsychotics (e.g., haloperidol): may block dopamine effects, reducing efficacy. - High‑dose pyridoxine (vitamin B6): accelerates peripheral levodopa metabolism.

Moderate Interactions (Monitor Closely): - Antihypertensives: may enhance orthostatic hypotension. - Iron or calcium supplements: reduce levodopa absorption if taken concurrently. - SSRIs and SNRIs: may increase risk of serotonin syndrome when combined with MAO‑B inhibitors.