Comparison

SunTheanine 150 mg and Theanine

SunTheanine 150 mg (Tomorrow's Nutrition) lists 1 distinct ingredients and Theanine (Natrol) 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	SunTheanine 150 mg	Theanine
Theanine	150 mg	150 mg

Amounts are per serving as DSLD gives them: SunTheanine 150 mg, 1 capsule; Theanine, 2 tablets. Current labels entered April 2019 and October 2011. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own

SunTheanine 150 mgTomorrow's Nutrition: every row against all products listing it
TheanineNatrol: every row against all products listing it