Z-Stack's patented, science-based formulation includes these natural ingredients which can support your body's own immune system:
Vitamin C is an essential nutrient for healthy immune system response, helping your body fight off illness-causing viruses and bacteria.
Vitamin D3 arms your body against viruses and bacterial infections.
Zinc helps the body activate immune system.
Quercetin reduces inflammation and helps to strengthen immune system.
Every vitamin has a purpose and our unique formulation of Z-Stack™ was developed with your immune system in mind.