California Gold Nutrition, L-Theanine, Featuring AlphaWave, 100 mg, 60 Veggie Capsules
Each vegan capsule supplies 100 mg of branded AlphaWave L-theanine without caffeine. A published iTested report identifies the product codes, laboratories, potency result, and microbial results, although it covers lot 3533 from 2018 rather than current inventory.
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Our Verdict
It has the best weighted balance of branded form, label clarity, published product-specific evidence, and price. Its roughly 25,000 iHerb reviews reinforce buyer trust, but quality criteria—not popularity—drive the rank.
Score Breakdown
Pros & Cons
Pros
- •Branded AlphaWave L-theanine with 100 mg fully disclosed per capsule
- •Published product-specific iTested report lists a 100 mg HPLC potency result
- •Vegan capsule with no caffeine and broad allergen exclusions
Cons
- •100 mg is the bottom of the requested research-dose range
- •Available iTested report is dated 2018 and does not document the current lot
Specifications
| L-Theanine Per Serving | 100 mg |
| L-Theanine Form | AlphaWave® highly purified L-theanine |
| Serving Size | 1 capsule |
| Servings Per Container | 60 |
| Caffeine | 0 mg; none listed |
| Format / Vegan | Hypromellose veggie capsule; vegan |
| Other Ingredients | Microcrystalline cellulose, hypromellose capsule, stearic acid, silicon dioxide |
| Testing / Certification | Published iTested report for lot 3533; Eurofins and ABC Testing; report dated 2018 |
Who Is This For?
Best For
- Buyers prioritizing branded L-theanine plus a published product-specific report
- Buyers wanting a 100 mg premeasured serving
Not For
- Buyers wanting 200 mg in one capsule
- Buyers requiring a certificate matching the current lot
Where to Buy
Appears In
Customer Reviews
Alternatives to Consider
Natural Factors, Stress-Relax, Suntheanine L-Theanine, 100 mg, 60 Chewable Tablets
Natural Factors
The label defines one serving as two chewable tablets, providing 200 mg of enzymatically produced Suntheanine. The product is vegan and carries Isura non-GMO documentation and mass-spectrometry laboratory verification, but each serving also contains 3 g of added sugar.
Doctor's Best, L-Theanine, AlphaWave, 200 mg, 60 Veggie Caps
Doctor's Best
One vegan capsule supplies 200 mg of AlphaWave L-theanine with no caffeine. The label fully discloses the active dose and excipients, but the iHerb page does not link a recognized finished-product certification or product-specific certificate of analysis.
Nutricost, L-Theanine, Unflavored, 3.6 oz (100 g)
Nutricost
Each 0.2 g scoop contains 200 mg of generic L-theanine, and the label lists no other ingredients. It is by far the lowest-cost option per active milligram, although the page supplies only a general third-party-tested claim rather than a named certification or published COA.
EVLution Nutrition, L-Theanine, 200 mg, 60 Veggie Capsules
EVLution Nutrition
Each vegan capsule supplies 200 mg of generic L-theanine without caffeine. It provides strong active-ingredient value and a trial-aligned dose, but the label does not identify a branded purity process, recognized certification, or product-specific COA.