Comparison

Bladderwrack 580 mg and Bladderwrack Whole Thallus

Bladderwrack 580 mg (Nature's Way) lists 4 distinct ingredients and Bladderwrack Whole Thallus (Nature's Way) 2 (rows of one ingredient counted once); 2 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 0.65.

Amount per serving (and % of the Daily Value)
IngredientBladderwrack 580 mgBladderwrack Whole Thallus
Iodine232 mcg (155%)232 mcg (155%)
Bladderwrack580 mg580 mg
Sodium10 mg
Iron0.34 mg (2%)

Amounts are per serving as DSLD gives them: Bladderwrack 580 mg, 1 capsule; Bladderwrack Whole Thallus, 1 capsule. Current labels entered November 2014 and December 2015. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own