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Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase, which converts...
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Updated: Jun 25, 2026

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease
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Published on: October 14, 2021

Alpha-methyldopa hepatotoxicity in pregnancy.

Tauseef Ali1, Nandakumar Srinivasan, Vu Le

  • 1Department of Gastroenterology, University of Oklahoma, Oklahoma City, USA. tauseef-ali@ouhsc.edu

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|February 12, 2009
PubMed
Summary

Methyldopa can cause liver injury in pregnancy, presenting as jaundice. Prompt diagnosis and treatment with corticosteroids resolved the methyldopa-induced hepatitis.

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Last Updated: Jun 25, 2026

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Area of Science:

  • Hepatology
  • Pharmacology
  • Obstetrics

Background:

  • Methyldopa is a common antihypertensive medication used during pregnancy.
  • Drug-induced liver injury (DILI) is a significant concern in pregnant patients.
  • Hepatotoxicity from methyldopa, though rare, requires careful consideration.

Observation:

  • A 33-year-old pregnant female presented with jaundice and elevated liver enzymes.
  • Investigations ruled out viral and autoimmune hepatitis.
  • Methyldopa was identified as the likely causative agent for hepatitis.

Findings:

  • The patient developed methyldopa-induced hepatitis during pregnancy.
  • Treatment with corticosteroids led to normalization of liver function tests.
  • This case highlights the importance of considering drug-induced causes of hepatitis.

Implications:

  • Clinicians should be vigilant for methyldopa-induced hepatotoxicity in pregnant patients.
  • Early recognition and management are crucial for favorable outcomes.
  • This case underscores the need for comprehensive drug-induced liver injury evaluations.