Appears safe based on current evidence
Safety assessments compiled from FDA, EFSA, FSA, and 7 other regulatory agencies. This information is for educational purposes — consult a healthcare professional for dietary advice.
L-Theanine
Last reviewed: April 2026 · Data sourced from WHO JECFA, FDA, EFSA, and 7 other regulatory agencies
At a Glance
Quick Answer
L-Theanine is rated "Appears Safe" according to current evidence. It is approved in the EU and approved in the US. This additive is currently approved in all four major markets (US, EU, UK, Japan).
On This Page
What is L-Theanine?
Amino acid from tea (Camellia sinensis). Calming effect without drowsiness. In relaxation beverages, supplements. Synergistic with caffeine. EU Novel Food. GRAS in US. In matcha
L-Theanine is classified as a Flavoring additive. It is currently approved in all major regulatory markets.
Regulatory Status by Country
🇺🇸 United StatesUS
ApprovedAmino acid from tea (Camellia sinensis). Calming effect without drowsiness. In relaxation beverages, supplements. Synergistic with caffeine. EU Novel Food. GRAS in US. In matcha
🇪🇺 European UnionEU
Novel Food (approved)Amino acid from tea (Camellia sinensis). Calming effect without drowsiness. In relaxation beverages, supplements. Synergistic with caffeine. EU Novel Food. GRAS in US. In matcha
🇬🇧 United KingdomUK
Same as EUFollows EU regulations
🇯🇵 Japan
Check MHLW🇨🇦 CanadaCA
ApprovedGenerally aligned with US FDA. Regulated by Health Canada.
🇦🇺 Australia/NZAU/NZ
Check FSANZVerify with Food Standards Australia New Zealand.
🇮🇳 India
Check FSSAIVerify with Food Safety and Standards Authority of India.
🇰🇷 South KoreaKR
Check MFDSVerify with South Korea's Ministry of Food and Drug Safety.
🇧🇷 Brazil
ApprovedGenerally aligned with Codex/US standards. Regulated by ANVISA.
🇨🇳 China
Check GB 2760Verify with China's GB 2760 National Food Safety Standard.
Note: Canada, Australia/NZ, India, South Korea, Brazil, and China statuses are inferred from international regulatory patterns. Always verify with the relevant national authority.
Expert Analysis
L-Theanine is classified as a flavoring in the food additive regulatory framework. Current scientific evidence supports its safety when consumed within established limits. This additive is approved across multiple major regulatory markets worldwide, suggesting broad scientific consensus on its safety profile. As with all food additives, moderation is key. Consult healthcare professionals for personalized dietary advice.
Is L-Theanine safe?
L-Theanine has a safety rating of "Appears Safe". Appears safe based on current evidence
Is L-Theanine vegan?
L-Theanine is generally considered vegan-friendly, though sourcing may vary.
Is L-Theanine banned in Europe?
No, L-Theanine is Novel Food (approved) in the EU.
What is L-Theanine made from?
Amino acid from tea (Camellia sinensis). Calming effect without drowsiness. In relaxation beverages, supplements. Synergistic with caffeine. EU Novel Food. GRAS in US. In matcha
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Frequently Asked Questions
Is L-Theanine safe?
Is L-Theanine banned in any country?
What is L-Theanine used for?
Sources & References
Regulatory data for L-Theanine is sourced from the following agencies:
- FDA: Substances Added to Food (formerly EAFUS)
- EFSA: Food Additives Database
- FSA: Approved Additives and E Numbers
- MHLW: Standards for Use of Food Additives
- Health Canada: Lists of Permitted Food Additives
- FSANZ: Food Additives
- FSSAI: Food Safety and Standards
- MFDS: Food Additives Standards
- ANVISA: Food Additives Legislation
- GB 2760: National Food Safety Standard
- WHO JECFA: International Safety Evaluations
- CSPI: Chemical Cuisine — Food Additive Safety Ratings
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