Comparison

L-Theanine and Double Strength L-Theanine 200 mg Suntheanine

L-Theanine (BRI Nutrition) lists 2 distinct ingredients and Double Strength L-Theanine 200 mg Suntheanine (NOW) 2 (rows of one ingredient counted once); 2 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)
IngredientL-TheanineDouble Strength L-Theanine 200 mg Suntheanine
Inositol100 mg100 mg
Theanine200 mg200 mg

Amounts are per serving as DSLD gives them: L-Theanine, 1 vegetarian capsule; Double Strength L-Theanine 200 mg Suntheanine, 1 vcap(s)(r). Current labels entered April 2020 and October 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own