Povidine nasal wash for upper respiratory infection prevention
Povidine “betadine” nasal wash has been shown to help prevent and kill many microbes that can cause infections.
This video shows how to mix your wash.
Please see the citations of all the studies providing evidence based science
Pelletier JS, Tessema B, Frank S, Westover JB, Brown SM, Capriotti JA. Efficacy of Povidone-Iodine Nasal and Oral Antiseptic Preparations Against Severe Acute Respiratory Syndrome-Coronavirus 2 (SARS-CoV-2). Ear Nose Throat J. 2021 Apr;100(2_suppl):192S-196S. doi: 10.1177/0145561320957237. Epub 2020 Sep 21. Erratum in: Ear Nose Throat J. 2020 Dec 8;:145561320977784. PMID: 32951446.
Arefin MK, Rumi SKNF, Uddin AKMN, Banu SS, Khan M, Kaiser A, Chowdhury JA, Khan MAS, Hasan MJ. Virucidal effect of povidone iodine on COVID-19 in the nasopharynx: an open-label randomized clinical trial. Indian J Otolaryngol Head Neck Surg. 2021 May 18:1-5. doi: 10.1007/s12070-021-02616-7. Epub ahead of print. PMID: 34026595; PMCID: PMC8130786.
Kamal Arefin M, Banu SS, Nasir Uddin AKM, Nurul Fattah Rumi SK, Khan M, Kaiser A, Arafat MS, Chowdhury JA, Khan MAS, Hasan MJ. Virucidal Effect of Povidone Iodine on SARS-CoV-2 in Nasopharynx: An Open-label Randomized Clinical Trial. Indian J Otolaryngol Head Neck Surg. 2022 May 6:1-10. doi: 10.1007/s12070-022-03106-0. Epub ahead of print. PMID: 35572740; PMCID: PMC9075709.