RSSA research paper from India shows how the immune system of mice was strengthened by the oral consumption of borax:
Boron Induces Lymphocyte Proliferation and Modulates the Priming Effects of Lipopolysaccharide on Macrophages
Indusmita Routray, Shakir Ali, Department of Biochemistry, Faculty of Science, Jamia Hamdard Deemed University, Hamdard Nagar, New Delhi, 110062, India
Downloaded from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4774930/pdf/pone.0150607.pdf
“Boron, which has been suggested for its role in infection, is reported in this study to increase lymphocyte proliferation and the secretion of CMI by the lipopolysaccharide (LPS)-stimulated peritoneal macrophages in BALB/c mice.” The best reported results with the mice were achieved by administration orally 4.6 mg of borax per kg of body weight.
I contacted Prof. Shakir Ali and he wrote back: “In fact, I was thinking in a similar way; but, unfortunately, my lab is not equipped to perform tests on viruses. Boron can augment the innate immune responses and I believe it should be able to lower the risk of COVID-19 on supplementation.”
For humans, this 4.6 mg of borax per kg of body weight could be achieved by dissolving a teaspoon (5 g) of borax powder in 750 ml of water and consuming a tablespoon (15 ml containing 100 mg of borax) of this dilution, three to five times per day (for 300 to 500 mg borax per day) depending on the body weight of 65 to 109 kg. The human application for COVID-19 of this method is speculative. On the other hand, there is no danger of overdose reported for borax.