That sounds a lot like my iMASK+ prophylactic regimen. 500mg of Quercetin, 10,000 iu Vitamin D3, 1000mg of Vitamin C, 50 mg zinc and Ivermectin once a month. Supposed to take Melatonin too but it gives me weird headaches.
I took the lactoferrin for about a month and felt like it was drying my sinuses out too much. I live in a dry climate so they are dry enough already. Figure I’ll take it if I do contract the WuFlu.
Hope you stay well now and have no further problems.
Back at you - Happy New Year!