Source Naturals Wellness Vitamin D-3, 2000IU, 100 Softgels (Pack of 2)

What the brand says

A healthy immune system gives us the ability to survive multiple health challenges and provides for long-term wellness and a greater quality of life. Vitamin D-3 regulates T-cells and supports the increased efficiency of macrophages. Both are types of white blood cells that are important components of the body’s system for cell-mediated immunity. Vitamin D-3 also supports the prevention of excessive expression of inflammatory cytokines.