Unlike gut health supplements, which deliver probiotics, prebiotics, fibers, enzymes, or other ingredients aimed at a defined digestive function, immune support supplements provide vitamins, minerals, botanicals, or other ingredients marketed around immune function, although immune effects are ingredient-specific and no broad supplement category can guarantee prevention, treatment, or cure of infection.
The central contrast involves different mechanisms. For immune support supplements, examine immune function and nutrient status; for gut health supplements, examine strain identity and viable count. Features should enter the decision after the practical objective is established.