Comparison

C Shield 500 mg With Echinacea & Zinc and Immune Health

C Shield 500 mg With Echinacea & Zinc (Nature's Gifts) lists 6 distinct ingredients and Immune Health (Sundown Naturals) 3 (rows of one ingredient counted once); 3 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 0.57.

Amount per serving (and % of the Daily Value)
IngredientC Shield 500 mg With Echinacea & ZincImmune Health
Vitamin C500 mg (556%)60 mg (67%)
Echinacea purpurea150 mgnot disclosed
Goldenseal50 mgnot disclosed
Zinc15 mg (136%)
Selenium100 mcg (182%)
Flavonoid50 mg

Amounts are per serving as DSLD gives them: C Shield 500 mg With Echinacea & Zinc, 1 tablet; Immune Health, 2 capsules. Current labels entered August 2013 and February 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own