Already, PVP-I gargles, throat sprays and nasal sprays are available over-the-counter in countries such as Japan and Canada.7 In Japan, a 0.45% PVP-I throat spray is available for the prevention of colds and sore throats, while gargling with the compound is part of their national respiratory guidelines.8
The Front Line COVID-19 Critical Care Working Group (FLCCC) also recommends povidone-iodine as part of their I-Mask+ protocol for prevention and early outpatient treatment of COVID-19. Part of their prevention protocol includes twice daily gargling with a 1% povidone/iodine solution, while iodine nasal spray or drops are recommended as one of the first line agents in their early treatment protocol. Specifically, they recommend:19
“Use 1 % povidone-iodine commercial product as per instructions 2–3 x daily. If 1 %-product not available, must first dilute the more widely available 10 %-solution and apply 4–5 drops to each nostril every 4 hours. (No more than 5 days in pregnancy.)”Dr Mercola An Easy and Effective Shield to Protect From COVID-19
Be very careful with any elemental form of iodine. Use it only under the supervision and constant monitoring of a medical professional.