Comparison

DAO Histamine Digester with Bioflavonoids and DAO Histaminase With Bioflavonoids

DAO Histamine Digester with Bioflavonoids (NutriCology) lists 3 distinct ingredients and DAO Histaminase With Bioflavonoids (Allergy Research Group) 3 (rows of one ingredient counted once); 3 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)
IngredientDAO Histamine Digester with BioflavonoidsDAO Histaminase With Bioflavonoids
Quercetin50 mg50 mg
Rutin50 mg50 mg
Diamine Oxidase41 mg41 mg

Amounts are per serving as DSLD gives them: DAO Histamine Digester with Bioflavonoids, 1 capsule; DAO Histaminase With Bioflavonoids, 1 capsule. Current labels entered April 2019 and October 2017. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own