I’ve been taking D3 and Zinc (amongst other things) daily since the early days of Covid. I’ve found them to be beneficial and I’m certain they, combined with general healthy living (I’m fit, I exercise, I run, I don’t eat like an idiot), have positively impacted not only my ability to dodge sickness, but also to get well quickly when I do become ill (only one mild illness since 2020 with several “itchy throat kinda cough a few days” episoides). While my experience is only anecedotal, there exists loads of pieces like this that try to either steer you away from them or deminish their effects. The enormity of the psyop attempting to keep us away from these supplements tells me they’re probably quite effective.

Here’s Dr Zelenko on the subject.