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L-Theanine — product comparison
Rankings from our live catalog (11 products with measured amounts). Not affiliate lists — our own structured ingredient data.
- Products
- 1
- +10 more also contain L-Theanine
- Structured dose
- 0 %
- 0 / 1
Serving: the amount the manufacturer states per serving on the label, for example 1 capsule. It is not always the full daily intake. Median: the middle price per serving, so half of the products cost less and half cost more. Cheapest and median only count products where L-Theanine is the main ingredient: the only active ingredient, at least half of the active ingredients' weight per serving, or, when every ingredient is a vitamin or mineral, listed first with at least half of the summed % of the nutrient reference value. Multi-ingredient formulas with nine or more active ingredients never count. Updated 2026-11-08.
Price per serving
Measure shown: price per servingL-Theanine as the main ingredient
No L-Theanine product carries a known serving yet, so price per serving cannot be calculated.
Also contains L-Theanine
10 products where L-Theanine is not the main ingredient, such as multivitamins and blends. They are ranked separately and are not included in the key figures above.
| # | ||||||
|---|---|---|---|---|---|---|
| 1 | 100 mg | €16.00 | 1 capsule | 90 | €0.18 | |
| 2 | 50 mg | €16.00 | 1 capsule | 60 | €0.27 | |
| 3 |  MuscleTech Hydroxycut Hardcore Elite Muscletech | 100 mg | €31.00 | 1 capsule | 100 | €0.31 |
| 4 |  Life Extension - Enhanced Stress Relief - 30 Vcaps Life Extension | 200 mg | €26.00 | 1 capsule | 30 | €0.87 |
How we calculate
Price per serving = price ÷ servings per pack. The count comes from serving data or pack quantity ÷ serving quantity in the same unit. ≈ marks a rounded count; price uses the unrounded count. The displayed serving is not always the full daily intake. Products without sufficient data are omitted.
Compare forms
L-Theanine by chemical form in our catalog: how many products, typical amount and what a serving costs. Medians from live data, not marketing.
No form data for L-Theanine yet.
Best value (lowest price per g)
Measure shown: price per g of L-Theanine across the whole packWe cannot calculate price per mg for L-Theanine yet — it requires a known number of servings per pack.
Only products with L-Theanine as the main ingredient. Others are listed under Also contains L-Theanine
How we calculate
Price per g = price ÷ (amount per serving × servings per pack). Products without a known serving count are left out rather than ranked on price ÷ amount per serving — that figure depends on serving size and reverses the order.
Highest amount per serving
| # | |||
|---|---|---|---|
| 1 |  Doctor's Best - L-Theanine - 90 Veggie Caps Doctor's Best | 150 mg | €35.00 |
Only products with L-Theanine as the main ingredient. Others are listed under Also contains L-Theanine