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In Parkinsons disease, carbidopa is often given with levodopa to prevent central conversion of levodopa to the brain, making
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No the given statement is false as

Carbidopa is Given because it prevent the peripheral conversion of levodopa into dopamine so more levodopa is available in central brain part

Carbidopa is a decarboxylase inhibitor . Decarboxylase enzyme convert levodopa into dopamine

Carbidopa is inhibitor to this enzyme and prevent conversion of peripheral levodopa and more levodopa is available for brain and nausea vomiting is prevented

As carbidopa cannot pass the blood brain barrier so carbidopa doesn't prevent the conversion of central levodopa and it prevent the conversion of peripheral levodopa

Levodopa alone cause vomiting as the dopamine release in peripheral tissue stimulate the CTZ which cause vomiting and nausea .

When carbidopa is used this conversation of levodopa to dopamine in peripheral tissue is stopped and side effect are prevented

Hope you find this helpful thankyou ☺️?

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