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Valsartan-induced angioedema.

Brian K Irons1, Ashwani Kumar

  • 1Department of Pharmacy Practice, Texas Tech University Health Sciences Center, School of Pharmacy-Lubbock Programs, Lubbock, TX, USA. brian.irons@ttuhsc.edu

The Annals of Pharmacotherapy
|July 5, 2003
PubMed
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This case study highlights a rare instance of dose-dependent angioedema caused by valsartan, an angiotensin-receptor blocker (ARB). The swelling resolved upon dose reduction, suggesting a link between valsartan dosage and this adverse effect.

Area of Science:

  • Pharmacology
  • Cardiovascular Medicine
  • Adverse Drug Reactions

Background:

  • Angiotensin-receptor blockers (ARBs) are widely used for hypertension.
  • Angioedema is a known side effect, more commonly associated with ACE inhibitors.
  • The mechanism of ARB-induced angioedema is not fully understood.

Observation:

  • A 64-year-old woman developed lip swelling after her valsartan dose was increased for hypertension.
  • No other causes for the angioedema were identified.
  • Symptoms resolved after valsartan dosage reduction.

Findings:

  • This is the third reported case of valsartan-induced angioedema.
  • This case is the first to suggest a dose-dependent relationship.
  • The Naranjo scale indicated a probable link between valsartan and angioedema.

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Implications:

  • Clinicians should consider valsartan as a potential cause of angioedema, even in dose-dependent cases.
  • Further research is needed to elucidate the mechanism of ARB-induced angioedema.
  • Awareness of this adverse effect is crucial for patient safety.