Natures Sunshine Elderberry D3fense (90 caps)
More and more research shows that in addition to supporting bone health, vitamin D is critical to the immune system. It's one of the reasons why the cloudy winter months (when people receive little sun exposure) are the hardest months for the immune system. Elderberry D3fense combines the benefits of elderberry fruit and vitamin D3 with other herbs that help the immune system to provide you year-round immune-system support. It contains a healthy dose of vitamin D3, which mounting research indicates strengthens the immune system, along with key ingredients elderberry fruit extract and Echinacea purpurea. Elderberry D3fense also contains willow bark extract, which contains salicin; olive leaf extract, which features oleuropein, the substance in olive wood; and royal jelly, a nutrient-dense substance secreted by the honey bee and containing fats, carbohydrates, amino acids and vitamins. Take 3 capsules daily.