Comparison

NF Formulas Spectra 303-T and Spectra 303-T

NF Formulas Spectra 303-T (Integrative Therapeutics) lists 6 distinct ingredients and Spectra 303-T (Integrative Therapeutics) 5 (rows of one ingredient counted once); 5 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 0.91.

Amount per serving (and % of the Daily Value)
IngredientNF Formulas Spectra 303-TSpectra 303-T
Zinc10 mg (91%)10 mg (91%)
Copper0.5 mg (56%)0.5 mg (56%)
Iodine225 mcg (150%)225 mcg (150%)
Tyrosine100 mg100 mg
Thyroid100 mg100 mg
Calcium40 mg (3%)

Amounts are per serving as DSLD gives them: NF Formulas Spectra 303-T, 1 tablet; Spectra 303-T, 1 tablet. Current labels entered July 2013 and January 2018. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own