As an integrative family physician, I like supplements over prescriptions but to be honest, I’m a minimalist for both. Good solid nutrition, regular movement and physical activity, stress mitigation, and quality sleep beat almost everything else against chronic disease.
For those interested in supplements, though, I use LABDOOR and CONSUMERLAB, to vet products.
Two that I’m suggesting patients look into during COVID are zinc 15mg daily and vitamin D3 1000 IU daily. There’s no smoking gun but to prevent COVID or treat mild cases, these are reasonable additions to your daily regimen while you await your vaccine.