Comparison
L-Theanine and L-Theanine 100 mg Suntheanine
L-Theanine (SuperSmart) lists 2 distinct ingredients and L-Theanine 100 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.
| Ingredient | L-Theanine | L-Theanine 100 mg Suntheanine |
|---|---|---|
| Green Tea | 1,000 mg | 250 mg |
| Theanine | 400 mg | 100 mg |
Amounts are per serving as DSLD gives them: L-Theanine, 4 capsules; L-Theanine 100 mg Suntheanine, 1 veg capsule. Current labels entered June 2025 and August 2014. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- L-TheanineSuperSmart: every row against all products listing it
- L-Theanine 100 mg SuntheanineNOW: every row against all products listing it