3BEARS IMMUNE SCIENCE - 18 Studies, Research Papers, & Clinical Study Results

Here are the links to various universities and scientific journals.

Vitamin D - Randomized trial of vitamin D supplementation to prevent seasonal influenza A in schoolchildren

Vitamin D3 deficiency can compromise the immune system's ability to fight off infections.

According to Harvard University Health, "the best way to get enough Vitamin D3 is taking a supplement because it's hard to eat enough through your food."

Zinc - Cytokines in the Pathogenesis of Rheumatoid Arthritis and Collagen-Induced Arthritis

Zinc is known to play a central role in aiding the immune system.

Elderberry - A Review of the Antiviral Properties of Black Elder (Sambucus nigra L.) Products

In one randomized clinical trial, 60 subjects with flu-like symptoms who took elderberry extract saw symptoms clear up 4 days earlier than placebo. Another clinical study showed positive results for helping clear up cold symptoms for air travelers. 

Vitamin C - Technical advance: ascorbic acid induces development of double-positive T cells from human hematopoietic stem cells in the absence of stromal cells

According to the NIH, "Vitamin C deficiency results in impaired immunity & higher susceptibility to infections." Ensure you get your daily Vitamin C intake for a strong immune system.

Magnesium - Effects of magnesium supplementation in hypertensive patients: assessment by office, home, and ambulatory blood pressures

Magnesium plays a major role in modulating and helping to control the immune response in a healthy manner. 

Echinacea - Evaluation of echinacea for the prevention and treatment of the common cold: a meta-analysis

Echinacea is an herbal flowering plant extract that is widely used for immune support all around the world.

Research shows that echinacea may help shorten the length & severity of colds, as well as upper respiratory infections (URIs).