Comparison

Immune Fortress and Immune Support

Immune Fortress (Absorb Health) lists 6 distinct ingredients and Immune Support (Lindberg) 4 (rows of one ingredient counted once); 4 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.71.

Amount per serving (and % of the Daily Value)
IngredientImmune FortressImmune Support
Reishi mushroom175 mg100 mg
Maitake Mushroom200 mg100 mg
Shiitake Mushroom175 mg100 mg
Beta-Glucans75 mg500 mg
Dandelion125 mg
Astragalus150 mg

Amounts are per serving as DSLD gives them: Immune Fortress, 2 capsules; Immune Support, 2 capsules. Current labels entered March 2020 and February 2017. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own