Comparison

Acidophilus Extra Strength with L-Sporogenes and Theralac

Acidophilus Extra Strength with L-Sporogenes (Rugby) lists 3 distinct ingredients and Theralac (Master Supplements Incorporated) 3 (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 0.62.

Amount per serving (and % of the Daily Value)
IngredientAcidophilus Extra Strength with L-SporogenesTheralac
Lactobacillus acidophilusnot disclosednot disclosed
Lactobacillusnot disclosednot disclosed
Calcium70 mg (5%)
Bifidobacterium animalis lactisnot disclosed

Amounts are per serving as DSLD gives them: Acidophilus Extra Strength with L-Sporogenes, 2 caplets; Theralac, 1 capsule. Current labels entered April 2020 and November 2017. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own