It looks like the effectiveness of the vaccines fade over time so I think these other therapeutics should be more available to people. Current estimates of the vaccine's effectiveness is about 5 to 8 months. So those that have been vaccinated, like myself, are at or approaching the waning of it. Yet there is currently no booster available yet. These other therapeutics would at least bridge the gap in the meantime until people receive the booster.
They also could be used as an extra layer of protection even if a person is vaccinated or may help those that are not.
Just FYI, my current regimen is 5,000 iu of Vitamin D, 25 mg zinc, 1,000 mg of vitamin C, 500 mg of quarcetin.
Feel free to post what anyone else is taking.