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Viral Defense Plus contains vitamins that have been shown to have anti-viral and immunity boosting properties.
Below are links to a few of the numerous scientific literature published on Quercetin, Zinc, Vitamin C, Vitamin D, and NAC (N-Acetylcysteine):
NATIONAL ACADEMY OF SCIENCES
The Significance of the Evidence about Ascorbic Acid (Vitamin C) and the Common Cold
Vitamin D and immune function: an overview
CAMBRIDGE UNIVERSITY
Vitamin D protects against colds and flu, finds major global study
SCIENCE DAILY
Vitamin D supplementation to prevent acute respiratory infections:
HEALTH TECHNOLOGY ASSESSMENT
METALLOMICS
Multiple impacts of zinc on immune function
THE AMERICAN JOURNAL OF CLINICAL NUTRITION
Zinc and immune function: the biological basis of altered resistance to infection
NATIONAL LIBRARY OF MEDICINE
The Role of Zinc in Antiviral Immunity
Zinc for the common cold—not if, but when
THE JOURNAL OF FAMILY PRACTICE
JOURNAL OF INFECTIOUS DISEASES & PREVENTATIVE MEDICINE
Quercetin: A Promising Treatment for the Common Cold
NATIONAL LIBRARY OF MEDICINE
MEDICINE®
These are not studies of Viral Defense Plus, but published scientific studies around each vitamin in our drink showing their anti-viral or immunity-boosting properties. We claim NO proven benefit of Viral Defense Plus for the specific prevention or treatment of COVID-19.