Theanine
Achieve calm focus without drowsiness with pure L theanine
★★★★★
Nutri Tailor 4.6/5 "Excellent" on Trustpilot
60 capsules
30 day supply
per day
Guaranteed additive free
Highest purity
Therapeutically effective
★★★★★ "I won't go back to high street supplements. The difference in quality is something you can actually feel." Susie
Have questions about Theanine?
"I get anxious but I don't want something that makes me drowsy. Is theanine calming without sedation?"
"Can I take theanine with my morning coffee to smooth out the jitters?"
"I have trouble switching off at night. Will theanine help me wind down?"
Get tailored guidance from Nutri365, your personal AI health expert.
★★★★★ "Finally, something that tells you what you actually need." Sarah
Achieve calm focus without drowsiness with pure L theanine
L-Theanine is an amino acid found almost exclusively in tea leaves. It promotes a state of relaxed alertness without causing drowsiness, making it useful both during the day for focus and in the evening for winding down.
Theanine works by supporting GABA activity in the brain and promoting alpha brain wave patterns, the same patterns associated with meditation and calm focus. Unlike sedatives, it does not impair concentration or cause grogginess. This makes it particularly well suited for people who need to manage stress while remaining mentally sharp.
Each capsule provides 200mg of pure L-Theanine with no fillers or additional ingredients. At this dose, research shows meaningful effects on anxiety, sleep quality and cognitive function. When combined with caffeine, which occurs naturally in tea, L-Theanine improves attention, reaction time and working memory beyond what either compound achieves alone.
Theanine has an excellent safety profile with no known tolerance development and no significant drug interactions at standard doses. It is compatible with most other supplements including magnesium, melatonin and ashwagandha. Effects can be felt within 30 to 60 minutes of taking it, with broader benefits building over consistent daily use.
Key benefits:
- Calm focus without drowsiness
- Less stress and racing thoughts
- Alert relaxation with caffeine synergy
| Each capsule contains: | %NRV* | |
|
L-Theanine
|
200 mg | † |
† Nutrient Reference Value (NRV*) not established
L-Theanine, Hydroxypropyl Methylcellulose (capsule).
Directions for use:
Take 2 capsules (400mg) once or twice per day with food.
For daytime calm and focus, take 2 capsules with breakfast. If you also want to support sleep, take a second dose of 2 capsules 30 to 60 minutes before bed.
Theanine does not cause sedation, so taking it during the day will not make you drowsy. The evening dose works by reducing racing thoughts and promoting the relaxed brain wave activity that helps with sleep onset.
If you are new to theanine, start with 2 capsules once per day and add the second dose after a week if needed. Theanine can be taken on an ongoing basis without the need for cycling or breaks.
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Suitable for men.
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Suitable for women.
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Suitable for people under sixteen years of age.
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If pregnant or breastfeeding consult your healthcare professional before purchasing and consuming this product.
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Suitable for vegetarians.
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Suitable for vegans.
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No gluten containing ingredients.
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No nut containing ingredients.
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No dairy containing ingredients.
If you are taking medication consult your prescribing physician before purchasing and consuming supplements.
Store in a cool dry place.
Keep out of reach of children.
Information displayed does not constitute medical advice.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
Quality promise
Why clinical grade matters
- ✓ GMP certified, pharmaceutical grade manufacturing
- ✓ Made in UK cleanroom facilities, ISO 9001 & ISO 14001 accredited
- ✓ No fillers, binders or additives — only active ingredients
- ✓ Fully traceable from raw material to finished product
- ✓ Non-GM, non-irradiated, 100% green energy manufacturing
Evidence
What the research shows
Our Health Reference Library is an ever-growing collection of peer-reviewed research and health guidance.
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Registered Associate Nutritionist (ANutr), MSc Nutritional Medicine
Frequently asked questions
What is Theanine good for?
Theanine provides amino acids that serve as building blocks for proteins.
When should I take amino acids?
Often best on an empty stomach for optimal absorption.
Can I take this with protein?
Yes, though taking separately may improve absorption.
What are amino acids used for in the body?
Amino acids build proteins, neurotransmitters, hormones, and enzymes. Each has specific functions beyond protein synthesis.
Are amino acid supplements safe?
Generally yes for most people. Those with certain metabolic conditions should consult a practitioner.
Why take individual amino acids vs protein?
Individual amino acids provide targeted beneficial effects. Protein provides balanced nutrition for general needs.
