Vitamin D Zinc Vitamin C quercetin
Absolutely, I'm 75 with comorbidities and took these to boot my immune system and haven't had as much as the common cold, and never wore an oxygen-restricting mask.
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Vitamin D Zinc Vitamin C quercetin
Absolutely, I'm 75 with comorbidities and took these to boot my immune system and haven't had as much as the common cold, and never wore an oxygen-restricting mask.