Comparison

Probiotic Quattro and Probiotic Acidophilus Xtra

Probiotic Quattro (VitaCeutical Labs) lists 4 distinct ingredients and Probiotic Acidophilus Xtra (Sundown Naturals) 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 1.00: the same ingredients, at the amounts in the table below.

Amount per serving (and % of the Daily Value)
IngredientProbiotic QuattroProbiotic Acidophilus Xtra
Lactobacillus acidophilusnot disclosednot disclosed
Bifidobacterium animalis lactisnot disclosednot disclosed
Streptococcus Thermophilusnot disclosednot disclosed
Lactobacillus delbrueckii bulgaricusnot disclosednot disclosed

Amounts are per serving as DSLD gives them: Probiotic Quattro, 1 capsule; Probiotic Acidophilus Xtra, 2 caplets. Current labels entered February 2012 and March 2014. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own