Comparison
Theanine XR Stress Relief and L-Theanine 200 mg
Theanine XR Stress Relief (Life Extension) lists 3 distinct ingredients and L-Theanine 200 mg (Source Naturals) 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 0.64.
| Ingredient | Theanine XR Stress Relief | L-Theanine 200 mg |
|---|---|---|
| Calcium | 50 mg (4%) | 76 mg (6%) |
| Theanine | 400 mg | 200 mg |
| Phosphorus | 40 mg (3%) |
Amounts are per serving as DSLD gives them: Theanine XR Stress Relief, 1 vegetarian tablet; L-Theanine 200 mg, 1 tablet. Current labels entered May 2025 and September 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Theanine XR Stress ReliefLife Extension: every row against all products listing it
- L-Theanine 200 mgSource Naturals: every row against all products listing it