Effect of Combined Polyphenol on the Disease Course in Children Diagnosed with Influenza

Eren Güzeloğlu1, Vefik Arica1, Belen Ateş1

  • 1Department of Pediatrics, Prof. Dr. Cemil Taşcıoğlu City Hospital, University of Health Sciences, Istanbul 34384, Türkiye.

Pharmaceutics
|July 28, 2026
PubMed

Insights

This study found that a polyphenol, vitamin D3, vitamin C, and zinc supplement, when given with antiviral therapy, significantly reduced symptom duration and severity in children with influenza. This combination therapy also led to faster recovery and return to normal activities.

Area of Science:

  • Pediatric Infectious Diseases
  • Nutritional Immunology
  • Pharmacology

Background:

  • Influenza in children leads to significant symptom burden and functional impairment.
  • Antiviral therapy is a standard treatment, but adjunctive therapies are being explored to improve outcomes.
  • Nutritional supplements, including polyphenols and vitamins, are investigated for their potential immunomodulatory and antiviral effects.

Purpose of the Study:

  • To evaluate the efficacy of a polyphenol, vitamin D3, vitamin C, and zinc preparation as an adjunct to antiviral therapy in pediatric influenza.
  • To assess the impact on symptom duration, severity, fever resolution, and functional recovery.

Main Methods:

  • Multicenter retrospective real-world data analysis of 128 children (4-10 years) with influenza.
  • Comparison between a control group (antiviral therapy alone) and a combined polyphenol group (antiviral therapy + supplement).
  • Assessment of symptom scores, fever resolution, and functional outcomes over 7 days.

Main Results:

  • The combined polyphenol group showed significantly faster and more marked improvement in all symptom scores by Day 3 and Day 5 compared to the control group.
  • Time to fever resolution was significantly shorter in the combined polyphenol group (1.84 days vs. 4.5 days).
  • Faster return to school and parental work, reduced need for healthcare visits and antipyretics, and high tolerability were observed in the combined polyphenol group.

Conclusions:

  • Adjunctive use of a polyphenol, vitamin D3, vitamin C, and zinc preparation significantly shortened symptom duration and severity in pediatric influenza.
  • This combination therapy facilitated faster functional recovery and reduced the need for additional medical interventions.
  • The supplement demonstrated a promising, well-tolerated role in managing pediatric influenza alongside standard antiviral treatment.

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