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Phlebotonics for venous insufficiency.

Maria José Martinez-Zapata1, Robin W M Vernooij, Sonia Maria Uriona Tuma

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Phlebotonics, used for chronic venous insufficiency (CVI), effectively reduce leg swelling and symptoms like cramps and tiredness. However, they do not improve ulcer healing and may cause more non-severe adverse events compared to placebo.

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Area of Science:

  • Vascular Medicine
  • Pharmacology

Background:

  • Chronic venous insufficiency (CVI) is a prevalent condition affecting lower limb circulation due to valvular dysfunction.
  • CVI symptoms include pain, itchiness, leg tiredness, swelling, and ulcers, significantly impacting patient comfort.
  • Phlebotonics are a class of drugs commonly prescribed for managing CVI symptoms.

Purpose of the Study:

  • To evaluate the efficacy and safety of oral and topical phlebotonics for treating signs and symptoms of lower extremity CVI.
  • This review is an update of a previous assessment first published in 2005.

Main Methods:

  • Systematic review and meta-analysis of randomized, double-blind, placebo-controlled trials (RCTs).
  • Included trials assessed various oral phlebotonics such as rutosides, diosmine, and calcium dobesilate in patients with CVI.
  • Data extraction and quality assessment were performed independently by two reviewers, with statistical analyses using risk ratios and mean differences.

Main Results:

  • Moderate-quality evidence indicates phlebotonics reduce leg edema and ankle circumference compared to placebo.
  • Phlebotonics demonstrated benefits for symptoms including trophic disorders, cramps, restless legs, swelling, and paresthesia.
  • Low-quality evidence showed no significant difference in ulcer healing rates between phlebotonics and placebo.
  • A higher risk of non-severe adverse events, primarily gastrointestinal disorders, was observed with phlebotonics.

Conclusions:

  • Phlebotonics offer moderate-quality evidence for improving edema and certain CVI symptoms but are associated with increased adverse effects.
  • No significant benefit was found for ulcer healing.
  • Further high-quality RCTs are necessary to strengthen the evidence base for clinically important outcomes in CVI management.