Comparison

NAD + Gold and TMG (Trimethylglycine) 175 mg

NAD + Gold (Quicksilver Scientific) lists 1 distinct ingredients and TMG (Trimethylglycine) 175 mg (Kirkman) 1 (rows of one ingredient counted once); 1 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)
Ingredient	NAD + Gold	TMG (Trimethylglycine) 175 mg
Betaine	50 mg	175 mg

Amounts are per serving as DSLD gives them: NAD + Gold, 1 ml; TMG (Trimethylglycine) 175 mg, 1 capsule. Current labels entered June 2020 and November 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own

NAD + GoldQuicksilver Scientific: every row against all products listing it
TMG (Trimethylglycine) 175 mgKirkman: every row against all products listing it