I started taking this somewhat famous stack instantly hearing that my room mate, and his friends, had sore throats. It is very important to take this at the beginning of the sickness. I am taking the following 2-times a day, for first 3 days:
- Quercetin, 500mg 
- Vitamin C, 2000 mg
- NAC, 1000mg
- Zinc, 10mg 
- Vitamin D, 5000 IU 
 Take EMIQ highly absorbable, or including Quercetin including Bromelain to increase absorption. You can take up to 1g/day with no known problems after a month.
 As of April 2022, meta analysis of 75 Vitamin D studies showed 81% outcome improvement when given as early treatment. It also showed 31% effectiveness as a prophylaxis (prevention). In addition, low vitamin d is a predictor of higher mortality. You can take up to 50,000 IU/day for 3 days with no known problems.
Update: a good share on detox supplements