Comparison

100 Billion Probiotic and Probiotic 80 Billion

100 Billion Probiotic (CHK Nutrition) lists 14 distinct ingredients and Probiotic 80 Billion (ProBioCare) 16 (rows of one ingredient counted once); 14 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 0.84.

Amount per serving (and % of the Daily Value)
Ingredient100 Billion ProbioticProbiotic 80 Billion
Lactobacillus acidophilusnot disclosednot disclosed
Lactobacillus rhamnosusnot disclosednot disclosed
Bifidobacterium animalis lactisnot disclosednot disclosed
Lactobacillus plantarumnot disclosednot disclosed
Bifidobacterium bifidumnot disclosednot disclosed
Bifidobacterium longumnot disclosednot disclosed
Lactobacillus caseinot disclosednot disclosed
Fructo-Oligosaccharides25 mgnot disclosed
Lactobacillus salivariusnot disclosednot disclosed
Bifidobacterium brevenot disclosednot disclosed
Bifidobacterium infantisnot disclosednot disclosed
Lactobacillus delbrueckii bulgaricusnot disclosednot disclosed
Arabinogalactan25 mgnot disclosed
Lactococcus lactisnot disclosednot disclosed
Lactobacillus8 billion CFU
Bifidobacterium (unspecified)72 billion CFU

Amounts are per serving as DSLD gives them: 100 Billion Probiotic, 1 vegetarian capsule; Probiotic 80 Billion, 1 veggie capsule. Current labels entered July 2020 and January 2016. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own