MaxLiving - Cold and flu season is approaching fast - is your immune system ready? Vitamin D is a great way to prepare your body for the season. Whether you take supplements,
Can the winter flu epidemic and winter COVID surge be linked in part to vitamin D deficiency? Is vitamin D important to the immune system? - Quora
![NUTRADEFENCE - Immune System Vitamins | Immune System Booster - 30 Tablets - Immune Support for Cold and Flu - Contains Elderberry, Eucalyptus, Vitamin D, Vitamin C & Zinc - by NutraVit : NUTRADEFENCE - Immune System Vitamins | Immune System Booster - 30 Tablets - Immune Support for Cold and Flu - Contains Elderberry, Eucalyptus, Vitamin D, Vitamin C & Zinc - by NutraVit :](https://m.media-amazon.com/images/I/813Cf5Uny2L.jpg)
NUTRADEFENCE - Immune System Vitamins | Immune System Booster - 30 Tablets - Immune Support for Cold and Flu - Contains Elderberry, Eucalyptus, Vitamin D, Vitamin C & Zinc - by NutraVit :
![Incidence of Colds/Influenza After 2,000 IU Vitamin D Daily for One Year | Download Scientific Diagram Incidence of Colds/Influenza After 2,000 IU Vitamin D Daily for One Year | Download Scientific Diagram](https://www.researchgate.net/publication/5475749/figure/fig1/AS:667173555027984@1536077979958/Incidence-of-Colds-Influenza-After-2-000-IU-Vitamin-D-Daily-for-One-Year.png)