Syndopa - General Information:

The naturally occurring form of dihydroxyphenylalanine and the immediate precursor of dopamine. Unlike dopamine itself, it can be taken orally and crosses the blood-brain barrier. It is rapidly taken up by dopaminergic neurons and converted to dopamine. It is used for the treatment of parkinsonian disorders and is usually given with agents that inhibit its conversion to dopamine outside of the central nervous system. [PubChem]

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Syndopa - Pharmacology:

Striatal dopamine levels in symptomatic Parkinson's disease are decreased by 60 to 80%, striatal dopaminergic neurotransmission may be enhanced by exogenous supplementation of dopamine through administration of dopamine's precursor, levodopa. A small percentage of each levodopa dose crosses the blood-brain barrier and is decarboxylated to dopamine. This newly formed dopamine then is available to stimulate dopaminergic receptors, thus compensating for the depleted supply of endogenous dopamine.

Syndopa for patients

Stopping this medication suddenly can cause Parkinson's disease to worsen quickly. Report bothersome or unexpected side effects. Unless prescribed, do not take levodopa in addition to this drug. Avoid pyridoxine (vitamin B6) if you are taking levodopa alone, although it can be taken with carbidopa/levodopa. Avoid high-protein meals for maximum absorption. If you are taking the sustained-release tablet, swallow a whole or one-half tablet without chewing or crushing it. Onset of effect of the first morning dose of the sustained release product could be delayed up to 1 hour compared with the quick-release product. A dark color (red, brown, or black) might appear in saliva, urine, or sweat and can stain clothing.

Syndopa Interactions

Syndopa Contraindications

Monoamine oxidase (MAO) inhibitors and Larodopa should not be given concomitantly and these inhibitors must be discontinued 2 weeks prior to initiating therapy with Larodopa. Larodopa is contraindicated in patients with known hypersensitivity to the drug and in narrow angle glaucoma.

Because levodopa may activate a malignant melanoma, it should not be used in patients with suspicious, undiagnosed skin lesions or a history of melanoma.

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