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Carbidopa

Carbidopa

Carbidopa is a medication used in combination with levodopa to treat Parkinson’s disease and Parkinson’s-like symptoms. It works by preventing the breakdown of levodopa before it reaches the brain, enhancing its effectiveness and reducing side effects.

Indications

-Parkinson’s disease: Used in conjunction with levodopa to improve motor function and reduce symptoms such as tremors, stiffness, and bradykinesia. -Parkinson’s-like symptoms: Effective for patients with similar symptoms due to other conditions.


Dosage

-Initial Dose: Typically, the starting dose is 25 mg of carbidopa with 100 mg of levodopa, administered three to four times a day. -Adjustment: Dosage is adjusted based on patient response and tolerability, with the usual range being 25-100 mg of carbidopa in combination with levodopa per dose. -Maximum Dose: The maximum dose is determined by the healthcare provider based on individual needs.


Contra-Indications

-Hypersensitivity: Known allergy to carbidopa, levodopa, or any component of the formulation. -Use with non-selective MAO inhibitors: Should not be used with monoamine oxidase inhibitors due to the risk of hypertensive crisis. -Narrow-angle glaucoma: Contraindicated due to potential worsening of the condition.


Special Precautions

-Renal Impairment: Use with caution in patients with renal impairment. -Hepatic Impairment: Monitor closely if hepatic function is compromised. -Psychiatric Conditions: Monitor for the onset or exacerbation of psychiatric symptoms. -Dyskinesia: May exacerbate or cause dyskinesia, requiring dose adjustments.


Side Effects

-Common: Nausea, dizziness, headache, and dry mouth. -Serious: Orthostatic hypotension, hallucinations, severe dyskinesia, and involuntary movements.


Drug Interactions

-: May enhance the hypotensive effect of blood pressure medications. -Antidepressants: Use with caution due to potential interactions with MAO inhibitors. -Other Parkinson’s Medications: Monitor for potential interactions and side effects when combined with other Parkinson’s disease treatments.


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