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L-Theanine is a unique amino acid primarily found in green tea (Camellia sinensis). Unlike other amino acids that serve as protein building blocks, L-Theanine is a psychoactive compound that directly influences brain function. It is the molecule responsible for green tea’s characteristic umami flavor and its paradoxical effect: calm alertness without drowsiness.
Why formulators choose L-Theanine: It is one of the few natural ingredients that produces relaxation without sedation, making it suitable for daytime stress management products. It is also clinically validated, GRAS-certified, and highly stable across multiple dosage forms.
differentiator: L-Theanine is the only amino acid that directly crosses the blood-brain barrier and promotes alpha brain wave activity (relaxed alertness).
Commercial sources comparison:
| Source | Purity | Production Method | Best For |
|---|---|---|---|
| Synthetic fermentation | 98–102% | Bacterial fermentation (glucose-based) | Cost-effective bulk, consistent quality |
| Green tea extract | 20–60% | Solvent extraction from tea leaves | Natural positioning, organic claims |
| Enzymatic synthesis | 98–102% | Enzyme-catalyzed (glutamine + ethylamine) | Premium, clean label |
Industry standard: >90% of commercial L-Theanine is produced via synthetic fermentation due to cost consistency, purity, and sustainability (no tea leaf waste).
| Parameter | Specification | Test Method |
|---|---|---|
| Assay (HPLC) | 98.0–102.0% | HPLC |
| Appearance | White to off-white crystalline powder | Visual |
| Odor | Characteristic (slight umami) | Organoleptic |
| Loss on Drying | ≤ 1.0% | USP <731> |
| Residue on Ignition | ≤ 0.2% | USP <281> |
| pH (1% solution) | 5.0–6.5 | USP <791> |
| Heavy Metals | Pb ≤ 0.5 ppm; As ≤ 0.5 ppm; Cd ≤ 0.2 ppm; Hg ≤ 0.05 ppm | ICP-MS |
| Related Substances | Single impurity ≤ 0.5%; Total ≤ 1.0% | HPLC |
| Residual Solvents | Meet USP <467> | GC |
| Particle Size | 95% through 80 mesh (standard); micronized available | Sieve Analysis |
LyvBio Co., Ltd. is a ISO-certified manufacturer and global supplier of high-purity L-Theanine powder. We serve nutraceutical, functional food, and beverage brands across North America, Europe, Asia, and the Middle East.
Supply capabilities:
Monthly capacity: 10+ metric tons
Bulk quantities: 1kg – 10,000kg
Packaging options: 1kg / 5kg / 25kg (fiber drums or foil bags)
Lead time: 3–5 days (samples), 10–15 days (bulk)
Documentation: COA, MSDS, TDS, stability data, allergen statement, Non-GMO
Certifications available:
Non-GMO Project Verified
Allergen-Free
Vegan
Organic (natural extract grade)
📧 Request bulk pricing & samples: info@lyvbio.com
L-Theanine’s primary mechanism involves modulation of key neurotransmitter systems:
L-Theanine application
L-Theanine is widely used across multiple supplement and functional food categories:
| Application | Typical Dosage per serving | Key Claims |
|---|---|---|
| Stress & anxiety supplements | 100–200 mg | Calm focus; stress reduction; mood support |
| Sleep support formulas | 100–200 mg (evening) | Relaxation; sleep quality (non-sedative) |
| Nootropic / brain health blends | 100–200 mg | Cognitive performance; alert calm |
| Pre-workout (with caffeine) | 100–200 mg | Reduces caffeine jitters; smooth energy |
| Functional beverages | 50–100 mg | Relaxation without drowsiness |
| Gummies & chews | 50–200 mg | Stress management (on-the-go) |
| Children’s calm formulas | 25–50 mg | Gentle relaxation (age-appropriate dosing) |
| Advantage | What It Means for You |
|---|---|
| High purity (≥98–102%) | USP/Ph.Eur. compliant; batch-to-batch consistency |
| Competitive bulk pricing | Volume discounts from 25kg+; price matching available |
| GMP & ISO 22000 certified | Audited manufacturing; supply chain security |
| Full documentation package | COA, MSDS, TDS, stability (36 months), allergen, Non-GMO |
| Flexible packaging | 1kg to 25MT; custom private label available |
| Fast global shipping | USA, EU, Asia, Middle East – 10–15 days bulk |
Contact our sales team: info@lyvbio.com
Q: What is the difference between L-Theanine and suntheanine?
A: Suntheanine is a trademarked brand name for pure L-Theanine produced via fermentation. Chemically, it is identical to generic L-Theanine. For most formulations, generic USP-grade L-Theanine provides equivalent quality at lower cost.
Q: Is L-Theanine suitable for children’s products?
A: Yes, at lower doses (25–50 mg). L-Theanine is GRAS for all ages and has been studied in children with ADHD and anxiety. Always consult regulatory guidelines for target markets.
Q: Does L-Theanine cause drowsiness?
A: No. L-Theanine promotes relaxation and alpha brain wave activity (relaxed alertness) without sedation. This is a key differentiation from melatonin, valerian, and GABA. It can be taken during the day without impairing performance.
Q: Is L-Theanine stable in hot beverages (tea, coffee)?
A: Yes. L-Theanine is heat-stable up to 100°C and remains bioactive in hot liquids. This is why traditional green tea (which contains natural L-Theanine) is consumed hot.
Q: What is the optimal ratio of L-Theanine to caffeine?
A: 2:1 L-Theanine to caffeine (e.g., 200 mg L-Theanine + 100 mg caffeine) is most studied for cognitive performance. However, 1:1 and 1:2 ratios are also used depending on desired effect.
Q: What is your MOQ?
A: Sample orders: 100g–1kg. Trial production: 5–25 kg. Commercial: Negotiable (500kg+ receives volume pricing). Lead time: 3–5 days (samples); 10–15 days (bulk).
📧 Email: info@lyvbio.com
🌐 Website: https://www.lyvbio.com
All technical inquiries receive a response within 24 hours, including COA, MSDS, pricing, and formulation recommendations.
Request your free sample today.
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