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Purpose <p>To revisit the pharmacology and real-world use of carbidopa in the management of autonomic disorders.</p> Methods <p>To identify articles suitable for this review, a search of the PubMed database was conducted in January 2025 using the keywords “Carbidopa,” “MK-486,” and “<span>L</span>-alpha-methyldopa hydrazine.”</p> Results <p>The pharmacotherapeutic role of carbidopa extends beyond the management of Parkinson’s disease. Our literature search revealed the use of carbidopa in three primary autonomic diseases to treat either nausea or symptoms of sympathetic hyperactivity: (1) familial dysautonomia, (2) hyperadrenergic postural orthostatic tachycardia syndrome (POTS), and (3) afferent baroreflex failure (familial or acquired). Even at a dose as high as 600&#xa0;mg/day, carbidopa was not associated with bothersome side effects in some of the clinical trials on familial dysautonomia. Pre-clinical evidence also suggests in vitro and in vivo inhibition of T-cell activation by carbidopa and a potential therapeutic use in cytokine release syndrome.</p> Conclusion <p>Current evidence, although limited, suggests that carbidopa has a favorable safety profile. While large, well-designed studies are warranted, observations from case series and small studies suggest that carbidopa could have utility in treating nausea in familial dysautonomia and symptoms of sympathetic hyperactivity in hyperadrenergic postural orthostatic tachycardia syndrome (POTS) and afferent baroreflex failure.</p>

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Carbidopa: beyond Parkinson’s disease

  • 期刊论文

  • 发表日期：

    2025年3月8日

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  • Abhishek Lenka,
  • Steven Vernino

摘要

Purpose

To revisit the pharmacology and real-world use of carbidopa in the management of autonomic disorders.

Methods

To identify articles suitable for this review, a search of the PubMed database was conducted in January 2025 using the keywords “Carbidopa,” “MK-486,” and “L-alpha-methyldopa hydrazine.”

Results

The pharmacotherapeutic role of carbidopa extends beyond the management of Parkinson’s disease. Our literature search revealed the use of carbidopa in three primary autonomic diseases to treat either nausea or symptoms of sympathetic hyperactivity: (1) familial dysautonomia, (2) hyperadrenergic postural orthostatic tachycardia syndrome (POTS), and (3) afferent baroreflex failure (familial or acquired). Even at a dose as high as 600 mg/day, carbidopa was not associated with bothersome side effects in some of the clinical trials on familial dysautonomia. Pre-clinical evidence also suggests in vitro and in vivo inhibition of T-cell activation by carbidopa and a potential therapeutic use in cytokine release syndrome.

Conclusion

Current evidence, although limited, suggests that carbidopa has a favorable safety profile. While large, well-designed studies are warranted, observations from case series and small studies suggest that carbidopa could have utility in treating nausea in familial dysautonomia and symptoms of sympathetic hyperactivity in hyperadrenergic postural orthostatic tachycardia syndrome (POTS) and afferent baroreflex failure.