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Impact of Tamoxifen from a Chemotherapy Drug to an Antiviral Drug to Treat COVID-19 Patients

  • Tamoxifen is used to treat breast cancer patients
  • Tamoxifen (TAM) makes sure that bone density stays within the normal range in postmenopausal women
  • TAM also decreases the risk damage caused by cardiovascular disease
  • TAM binds to estrogen
  • TAM suppresses viral replication
  • NK cells were deficient in those with severe SARS coronavirus (two decades ago)
  • NK cells aid in immunity against pathogens
  • 10-20% of lymphocytes are NK cells found in the lungs
  • TAM regulates the activity of NK cells, and other white blood cells
  • TAM reduces PGE2 activity, increasing NK cell activity
  • Reduction in PGE2 reduces viral replication
  • TAM increases Nrf2 activity in breast cancer patients
  • TAM prevents HIV replication when PKC is increasing viral replication
  • TAM functioning increases if given before the onset of an infection
  • TAM target viruses with spikes present on them (along with envelopes)
  • TAM may be more beneficial than chloroquine in patients with COVID-19

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Updated 2020-08-17

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SARS-CoV-2 (COVID-19)

Biomedical Sciences