Are there authorised health claims for L-Theanine?

No authorised health claim has been approved for L-Theanine under EU or GB law. We describe it simply: what it is, where it comes from, how much is in the formula and what published research has and has not established.

Amino acid

L-Theanine

L-theanine is a non-protein amino acid found almost exclusively in tea leaves and a few fungi. It is structurally related to glutamate.

Honest information about L-Theanine

L-Theanine is included in our formulas as a botanical ingredient with traditional wellness heritage. No authorised health claim has been approved for it under EU or GB law, so we share only its identity, origin, dose and documented history — never implied benefits.

Claims held “on hold” pending evaluation are treated here as unauthorised. We will not imply an effect through images, testimonials or suggestive wording either.

Wording we never use for L-Theanine

supports · improves · boosts · reduces · treats · prevents · balances · detoxes · protects

Forms

Forms and what appears on a label

Supplements use the L-isomer, often as a patented fermentation-derived material. Racemic DL-theanine is a different specification and should be declared as such.

Sourcing

Where it comes from

Green tea, black tea and some mushrooms.

In our formulas

Dose and how we use it

Paired with caffeine in Cognitive Vitality to provide smooth, focused energy.

Can be taken at any time of day, often alongside a morning coffee or before a stressful task.

Exact amounts per daily portion are declared on every product label and on each product page.

Evidence

What research has — and has not — established

Trials have examined attention, subjective calm and interaction with caffeine, mostly acute, small and in healthy volunteers. Effects reported are small and not consistently reproduced. No EU or GB health claim is authorised.

Safety

Cautions and interactions

Well tolerated in studies to date. Not established for use in pregnancy, breastfeeding or children. Seek advice if you take blood-pressure medication or sedatives.

Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the recommended daily portion. Keep out of reach of young children.

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