Comparison

B-Complex Super Strength and Stress Vitamin B Complex With Vitamin C

B-Complex Super Strength (KAL) lists 12 distinct ingredients and Stress Vitamin B Complex With Vitamin C (Nature's Harmony) 13 (rows of one ingredient counted once); 12 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 0.95.

Amount per serving (and % of the Daily Value)
IngredientB-Complex Super StrengthStress Vitamin B Complex With Vitamin C
Vitamin B625 mg (1471%)15 mg (882%)
Vitamin B1225 mcg (1042%)10 mcg (417%)
Niacin150 mg (938%)100 mg (625%)
Folate680 mcg100 mcg
Pantothenic Acid (Vitamin B5)25 mg (500%)46 mg (920%)
Riboflavin25 mg (1923%)25 mg (1923%)
Thiamin100 mg (8333%)25 mg (2083%)
Biotin50 mcg (167%)5 mcg (17%)
Choline100 mg (18%)15 mg (3%)
Inositol100 mg15 mg
PABA30 mg25 mg
Liver100 mg50 mg
Vitamin C300 mg (333%)

Amounts are per serving as DSLD gives them: B-Complex Super Strength, 2 tablets; Stress Vitamin B Complex With Vitamin C, 1 tablet. Current labels entered October 2021 and May 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own