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Quercetin and Vitamin D — Allies Against Coronavirus?

Analysis by Dr. Joseph Mercola Fact Checked

Story at-a-glance -

  • As the outbreak of COVID-19 continues to spread around the world, more than 80 clinical trials are underway testing remedies ranging from intravenous vitamin C and stem cells to HIV drugs and malaria medication
  • A derivative of quercetin has been shown to provide broad-spectrum protection against a wide range of viruses, including SARS. Canadian and Chinese researchers are now collaborating on a study to assess the effectiveness of quercetin against COVID-19 infection
  • Quercetin is a powerful immune booster and broad-spectrum antiviral. It also inhibits the release of pro-inflammatory cytokines, which may be beneficial since serious COVID-19 infection and subsequent death appears to be due to cytokine storm activity
  • While there are no clinical trials investigating vitamin D for coronavirus specifically, there are plenty of data showing it’s an important component in the prevention and treatment of influenza and upper respiratory tract infections
  • Other nutraceuticals thought to be useful in the prevention of coronavirus infection include NAC, spirulina, beta-glucan, glucosamine, selenium, zinc, lipoic acid and sulforaphane

As the outbreak of novel coronavirus, COVID-19, continues to spread around the world, researchers are feverishly searching for effective remedies. According to a February 15, 2020, Nature article, more than 80 clinical trials are underway testing remedies ranging from intravenous vitamin C and stem cells from menstrual blood to HIV drugs and malaria medication.

There's also a study looking at serum obtained from patients who recovered from laboratory confirmed COVID-19 infection — the idea being that it will contain antibodies a freshly-infected patient would need to fight off the infection more effectively.


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