California Gold Nutrition, L-Theanine, Featuring AlphaWave, 200 mg, 60 Veggie Capsules
Each vegetarian capsule contains 200 mg of branded AlphaWave L-theanine and no caffeine. The supplier specifies AlphaWave as at least 98% L-theanine, while iHerb publishes a product-specific iTested certificate, although the located report covers a 2018 lot.
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Our Verdict
It combines a documented ≥98% branded L-theanine form, a 200 mg research-aligned serving, published product-specific laboratory evidence and the list's lowest cost per equal active dose.
Score Breakdown
Pros & Cons
Pros
- •One capsule supplies 200 mg, matching the median dose reported across caffeine-free or low-caffeine human trials.
- •A published product-specific iTested certificate reports potency and microbial results.
- •$0.17 per 200 mg serving is the lowest cost per equal active dose in this list.
Cons
- •The published certificate located is for lot 3532 from 2018, not the currently shipping lot.
- •Contains microcrystalline cellulose, stearic acid and silica in addition to the hypromellose capsule.
Specifications
| L-Theanine Form | AlphaWave® branded L-theanine; supplier specification ≥98% L-theanine |
| L-Theanine Per Serving | 200 mg |
| Serving Size | 1 capsule |
| Servings Per Container | 60 |
| Caffeine Per Serving | 0 mg |
| Format | Veggie capsule |
| Other Ingredients | Microcrystalline cellulose, hypromellose capsule, stearic acid, silicon dioxide |
| Third-Party Evidence | Published iTested product-specific certificate; located report covers lot 3532 from 2018 |
Who Is This For?
Best For
- Buyers prioritizing documented branded L-theanine at a low cost per 200 mg
- Vegans wanting a one-capsule, caffeine-free serving
Not For
- Buyers requiring a certificate for the exact currently shipping lot
- Buyers avoiding cellulose, stearic acid or silica fillers
Where to Buy
Appears In
Customer Reviews
Alternatives to Consider
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Natural Factors, Stress-Relax, Suntheanine L-Theanine, 100 mg
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Nature's Bounty, L-Theanine, 90 Capsules
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Doctor's Best, L-Theanine, AlphaWave, 200 mg, 60 Veggie Caps
Doctor's Best
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