Ingredient profile
L-Theanine in Neuro Recall: Calm Focus Claims, Caffeine and Who Should Skip It
L-theanine is an amino acid from tea leaves, seventh of ten in Neuro Recall's 635 mg blend, with no amount printed. Human data are limited: effects on anxiety are mixed and sleep studies are small (MSKCC, L-theanine). It may add to drowsiness with sedatives. The blend's green tea extract also brings caffeine (NCCIH, Green tea).
Written by the Neuro Recall editorial teamUpdated
Label facts
What is L-theanine in Neuro Recall?
L-theanine is an amino acid found naturally in tea leaves. Neuro Recall lists it on its own line in the blend, seventh of ten, right after berberine.
| Label name | L-Theanine |
|---|---|
| Scientific name | Amino acid from tea leaves |
| What it is | Amino acid |
| Position in the list | 11 of 14 (blend ingredients are listed from most to least by weight; the four vitamins and minerals come first with amounts) |
| Per serving (2 capsules) | Not disclosed (part of the 635 mg blend) |
| Amount used in research | Human data limited; no human dose given in our source |
| Strength of evidence | Limited, mixed |
| Traditional or marketed use | Tea amino acid sold for calm focus |
| Main caution | May add to drowsiness with sedatives; not for pregnancy or nursing. |
It is often sold as a "calm focus" ingredient. That phrase comes from marketing, and the research behind it is thin.
The research
What are the benefits of L-theanine?
Human evidence is limited. Effects on anxiety are mixed, sleep studies are small, and attention changes have been linked to alpha brain waves (MSKCC, L-theanine).
| Area | What studies show | How firm |
|---|---|---|
| Feeling calm or anxious | Mixed results | Weak |
| Sleep | A few small studies | Weak |
| Attention | Changes tied to alpha brain waves | Early |
| Memory | No memory finding in our source | None |
| Neuro Recall itself | No trial of the formula | None |
Tea, twice
L-theanine and caffeine: what does Neuro Recall contain?
Both, in a way. L-theanine is listed by name, and the green tea leaf extract above it naturally contains caffeine (NCCIH, Green tea). Neither amount is printed.
L-theanine
An amino acid studied for relaxation and attention. No stimulant effect is claimed for it.
Green tea extract
At least 50% EGCG, plus caffeine. Rare liver injury has been reported with extract capsules, and it can raise blood pressure (NCCIH, Green tea).
Because green tea comes earlier in the list, it weighs at least as much as the L-theanine. Our green tea source does not discuss memory or thinking at all, so its place here rests on marketing, not data. If you are sensitive to caffeine, count Neuro Recall as one more source.
Interactions
Does L-theanine make you drowsy?
The known concern is stacking. L-theanine may add to drowsiness when taken with sedatives (MSKCC, L-theanine).
Ask your doctor or pharmacist before adding Neuro Recall. Keep taking your prescribed medicine as directed.
Green tea extract has its own interactions: it lowers levels of nadolol, a blood pressure drug, and interacts with atorvastatin and raloxifene (NCCIH, Green tea).
Amount
L-theanine dosage: what is known?
Our source gives no human dose, so we will not suggest one. In Neuro Recall the amount is hidden in the blend.
Blends list items from most to least by weight (FDA, Labeling guide). L-theanine is seventh, so six items weigh at least as much. Seven equal shares of 635 mg are about 90 mg, the most L-theanine can be.
Stick to the 2 capsules the label directs. Extra capsules would raise every other ingredient too, including the caffeine.
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Order nowA gentle start
How can caffeine-sensitive people try Neuro Recall?
Start in the morning and watch your sleep. The label names no time of day, so an early dose is allowed and keeps the green tea caffeine away from bedtime.
Take both capsules early
With breakfast is easy to remember. Avoid an evening dose.
Trim other caffeine at first
For the first two weeks, skip the afternoon coffee, tea or soda so you can tell what the capsules do.
Log sleep and heartbeat
Note bedtime, wake time and any jitters. A racing heart or new headaches are reasons to stop and call your doctor.
Give it a steady three months before you judge it; bacopa, the blend's best-studied herb, was tested over about that long (ADDF, Bacopa).
Limits
Is L-theanine a treatment for anxiety, sleep problems or ADHD?
No. L-theanine has been studied for relaxation and sleep, but the results do not make it a treatment for anxiety disorders, insomnia or ADHD. Neuro Recall is not a treatment for any of them either.
- Anxiety that disrupts daily life deserves a doctor's visit
- Adults need 7 or more hours of sleep a night, and no capsule replaces them (CDC, Sleep)
- Attention problems need a proper evaluation, not a supplement trial
Fit
Who should not take L-theanine?
Pregnant and nursing women should not take it; the source lists both as reasons to avoid it (MSKCC, L-theanine). The Neuro Recall label says the same for the whole formula.
- Anyone pregnant or breastfeeding
- People on sedatives or sleep medicine, unless a doctor approves
- People who react badly to caffeine
- Anyone under 18
FAQ
L-theanine in Neuro Recall: common questions
Can I take L-theanine with coffee?
Many people do, but Neuro Recall already contains caffeine from its green tea extract, in an amount that is not printed (NCCIH, Green tea). Coffee stacks more caffeine on top. If you notice jitters, a racing heart or poor sleep, cut back on coffee first and tell your doctor.
What does L-theanine do for the brain?
Studies link it to changes in alpha brain waves, which are tied to attention (MSKCC, L-theanine). Beyond that, human data are limited: effects on anxiety are mixed and sleep studies are small. Our source reports no memory effect for L-theanine.
Is L-theanine a stimulant?
No. L-theanine is an amino acid, not a stimulant. The stimulant in Neuro Recall is the caffeine that comes naturally with its green tea leaf extract (NCCIH, Green tea), so the capsules are not caffeine-free even though caffeine is not listed.
Is L-theanine safe during pregnancy?
No. L-theanine should not be used in pregnancy or while nursing (MSKCC, L-theanine), and the Neuro Recall label says do not use the formula if you are pregnant or nursing. Ask your doctor about any supplement while you are expecting or breastfeeding.
Does L-theanine help with sleep?
Only small studies have looked at it, so the answer is unclear (MSKCC, L-theanine). Neuro Recall is not a sleep aid, and its green tea extract adds caffeine. For better rest, aim for 7 or more hours a night (CDC, Sleep) and see your doctor if poor sleep lasts.
Can L-theanine interact with medications?
Yes. It may add to drowsiness with sedatives (MSKCC, L-theanine). In Neuro Recall, the green tea extract also lowers nadolol levels and interacts with atorvastatin and raloxifene (NCCIH, Green tea). Never stop or change a dose on your own; ask your pharmacist instead.
Is L-theanine the same as green tea extract?
No. L-theanine is one amino acid found in tea, while green tea extract is a concentrate of the leaf, here with at least 50% EGCG and some natural caffeine. Neuro Recall lists both on separate lines, with green tea fifth and L-theanine seventh in the blend.
Who wrote this
Written and reviewed by
Plain-language pages built from the label, the sales page and linked public health sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a U.S. merchant that sells Neuro Recall, not by the manufacturer (the label carries the FYVUS logo). We earn money when you buy through our order links.
Keep reading
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What 50% EGCG means, the caffeine you cannot measure, and the liver reports linked to green tea extract capsules.
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Side effects and drug interactions for all 14 Neuro Recall ingredients, plus liver warning signs and when to stop.
Read moreHow to use
Neuro Recall dosage, timing, missed doses, storage and a simple 3-month memory and sleep log.
Read moreU.S. authorized Neuro Recall merchant
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