Comparison

B-Complex with Metafolin and Intrinsic Factor and Better B

B-Complex with Metafolin and Intrinsic Factor (Douglas Laboratories) lists 9 distinct ingredients and Better B (Progressive Professional from Progressive Laboratories) 12 (rows of one ingredient counted once); 9 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 0.72.

Amount per serving (and % of the Daily Value)
IngredientB-Complex with Metafolin and Intrinsic FactorBetter B
Vitamin B620 mg (1176%)10 mg (588%)
Vitamin B12500 mcg (20833%)100 mcg (4167%)
Niacin50 mg (313%)50 mg (313%)
Folate667 mcg DFE (167%)400 mcg
Pantothenic Acid (Vitamin B5)50 mg (1000%)100 mg (2000%)
Riboflavin20 mg (1538%)10 mg (769%)
Thiamin50 mg (4167%)25 mg (2083%)
Biotin300 mcg (1000%)330 mcg (1100%)
Intrinsic Factor20 mg20 mg
Choline50 mg (9%)
Inositol25 mg
PABA45 mg

Amounts are per serving as DSLD gives them: B-Complex with Metafolin and Intrinsic Factor, 1 vegetarian capsule; Better B, 1 capsule. Current labels entered August 2020 and April 2022. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own