Which herb's root is used as an immunostimulant and is indicated for infections and immune support?

• A. Baptisia tinctoria
• B. Berberis aquifolium
• C. Bryonia alba
• D. Calendula officinalis

Answer: (A)

Immunostimulants are used to support the body’s defenses when infections are present or suspected, helping to mobilize the immune response. The root of Baptisia tinctoria has a traditional herbal use precisely in this way: as an immunostimulant for infections and to bolster immune support. It’s chosen when the clinician wants to stimulate systemic immune activity rather than merely address local symptoms.

In contrast, Berberis aquifolium (Oregon grape) is valued more for its alterative and antimicrobial/ant hepatic-supporting actions, not primarily as an immune stimulator. Bryonia alba is typically used for inflammatory-type febrile conditions with restlessness and body aches, rather than for boosting immune defenses. Calendula officinalis is renowned for wound healing and anti-inflammatory effects, often used topically or for mucosal inflammation, not as an immunostimulant.

So, the root that best fits the description of an immunostimulant indicated for infections and immune support is Baptisia tinctoria.