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Related Experiment Videos

Probable acenocoumarol-amoxycillin interaction

J Soto1, J A Sacristan, M J Alsar

  • 1Clinical Pharmacology Unit, Hospital Santa Cruz, Liencres-Cantabria, Spain.

Acta Haematologica
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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This case study highlights a potential drug interaction between acenocoumarol and amoxicillin. Adding amoxicillin to acenocoumarol treatment may increase the risk of bleeding in patients with deep vein thrombosis.

Area of Science:

  • Pharmacology
  • Internal Medicine

Background:

  • Acenocoumarol is an anticoagulant used to treat and prevent blood clots.
  • Maintaining a therapeutic International Normalized Ratio (INR) is crucial for effective anticoagulation and minimizing bleeding risk.

Observation:

  • A patient on long-term acenocoumarol therapy for deep vein thrombosis (DVT) experienced a significant increase in INR (7.1) and spontaneous bruising.
  • This occurred seven days after initiating amoxicillin for a suspected respiratory infection.

Findings:

  • The elevated INR and bruising resolved within three weeks after discontinuing amoxicillin.
  • This suggests a drug interaction between acenocoumarol and amoxicillin, leading to potentiated anticoagulant effects.

Implications:

Related Experiment Videos

  • Clinicians should be aware of the potential interaction between acenocoumarol and amoxicillin.
  • Monitoring INR closely is recommended when these medications are co-administered, especially in patients with DVT.