The effects of many supplements on immune health markers have been studied, and the research is ongoing. As of 2022, some of the most frequently studied supplements for immune health include Fish Oil, Vitamin C, Colostrum, Spirulina, Astaxanthin, Reishi, Vitamin D, Vitamin E, Boron, Conjugated Linoleic Acid, and Garlic. Many of these supplements have been studied for their ability to improve immunity by limiting inflammation or by enhancing the body’s defense against damaging compounds, such as free radicals. Two exceptions to this list are Vitamin D and Garlic, both of which are primarily known for their ability to help the body manage or resist infections. A group of supplements that individually have been studied to a lesser degree on this topic, but that collectively present a noteworthy body of evidence, are adaptogens. Adaptogenic plants (such as Eleuthero, Ginseng, Ashwagandha, Rhodiola rosea, and Astragalus) are thought to work primarily through their ability to help the body adapt to stress.[1]
Have any supplements been studied for immune health?
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•Last Updated: May 16, 2025
Many supplements have been studied for their effects on immune health, and notable ones include fish oil, vitamin C, colostrum, and vitamin D. Research suggests that these supplements may enhance immunity by reducing inflammation or aiding the body's defense against harmful compounds, and adaptogens like ginseng and ashwagandha may work by helping the body adapt to stress.