Condition
    Moderate Evidence
    Effectiveness 1/5

    Vitamin C for Chills

    Vitamin C does not prevent or shorten febrile illness in the general population, and chills are a symptom of the underlying cause.

    Overview

    Vitamin C does not prevent or shorten febrile illness in the general population, and chills are a symptom of the underlying cause.

    Verdict

    Not supported

    No role here. Treat the cause and use antipyretics for comfort if needed.

    How It Works

    Vitamin C concentrates in leukocytes and supports phagocytic function, a theoretical basis that has not produced clinical benefit against febrile infection.

    Dosing & Protocol

    Typical dose

    Recommended dose
    No established dose for febrile illness
    Expected timeframe
    Not applicable.

    Protocol

    form
    n/a
    notes
    Rigors with confusion or breathlessness need urgent assessment
    duration
    n/a
    starting dose
    Not recommended for febrile illness

    Evidence

    What the studies say

    The Cochrane review of regular vitamin C supplementation found no reduction in the incidence of respiratory infection in the general population and only a marginal effect on duration. No trial has examined chills or rigors as an outcome. In sepsis, where the case for high-dose intravenous vitamin C was made most forcefully, the large LOVIT trial in 2022 found higher risk of death or persistent organ dysfunction in the vitamin C arm, prompting a reversal of enthusiasm.

    Vitamin C for preventing and treating the common cold

    Score: 9/10
    2013
    systematic_review
    n=11306

    Hemila H, Chalker E

    Regular vitamin C did not reduce cold incidence in the general population but shortened duration modestly

    View source

    Safety

    Caveats

    Doses above 2g daily cause diarrhoea and increase oxalate excretion. High-dose intravenous vitamin C in sepsis showed harm in LOVIT.

    Less likely to help if

    Everyone with chills from acute infection.

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.