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The Journal

Tag

#l-theanine

L-Theanine: green-tea amino acid for calm focus, often paired with caffeine.

Does Tea Break a Fast? Green, Black, Matcha and Herbal
Wellness

Does Tea Break a Fast? Green, Black, Matcha and Herbal

Plain tea has about 2 calories a cup and does not break a fast. Milk, honey and bottled sweet teas do. Cup-by-cup table with labels checked Oct 2026.

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Roon Team
October 11, 2026·8 min read
+2
Everyday Dose Review: The Label, Caffeine and Real Cost
Energy

Everyday Dose Review: The Label, Caffeine and Real Cost

Everyday Dose Coffee+ has 45 or 90 mg caffeine and a 7.3 g blend with no per-ingredient doses. What the label shows, what it costs after the promo.

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Roon Team
October 11, 2026·9 min read
#caffeine+3
Neuro Gum Alternatives: 6 Options Ranked by Dose and Price
Alternatives

Neuro Gum Alternatives: 6 Options Ranked by Dose and Price

Neuro Gum has 40 mg caffeine and 60 mg L-theanine a piece. Six alternatives compared on caffeine, format, price per serving and who each one suits.

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Roon Team
October 6, 2026·10 min read
+2
Best Nootropic Energy Drinks (2026): Neutonic, Nectr, and What Is Actually in the Can
Energy

Best Nootropic Energy Drinks (2026): Neutonic, Nectr, and What Is Actually in the Can

Neutonic, Gorgie, and Ghost ranked by disclosed nootropic doses and proprietary blends, plus where a caffeine pouch fits instead of a can.

R
Roon Team
September 7, 2026·10 min read
#l-theanine
L-Theanine and SSRIs: Lexapro, Zoloft, Prozac (and Wellbutrin) Drug by Drug
Nootropics

L-Theanine and SSRIs: Lexapro, Zoloft, Prozac (and Wellbutrin) Drug by Drug

L-theanine with Lexapro, Zoloft, Prozac, or Wellbutrin: the actual co-administration evidence, the pharmacokinetics, and what to ask your prescriber.

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Roon Team
September 6, 2026·9 min read
#l-theanine
L-Theanine and Alcohol: What Rodent Studies Show, What Humans Haven't Tested
Nootropics

L-Theanine and Alcohol: What Rodent Studies Show, What Humans Haven't Tested

L-theanine and alcohol: what rodent liver studies actually found, why no human trial exists yet, and what that means before you combine them.

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Roon Team
September 3, 2026·9 min read
#l-theanine
Gorgie Energy Drink Review: 150 mg Green-Tea Caffeine, L-Theanine, and Stevia in One Can
Energy

Gorgie Energy Drink Review: 150 mg Green-Tea Caffeine, L-Theanine, and Stevia in One Can

150 mg green tea caffeine, 75 mg L-theanine, fully disclosed doses, and stevia: an honest review of what's actually in a can of Gorgie.

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Roon Team
September 1, 2026·9 min read
#l-theanine
How Much L-Theanine Is Too Much? Upper Limits, Overdose Symptoms, and the 400 mg Question
Nootropics

How Much L-Theanine Is Too Much? Upper Limits, Overdose Symptoms, and the 400 mg Question

The real upper limit for L-theanine: the highest doses used in human trials, the animal toxicology ceiling, and what overdose would plausibly look like.

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Roon Team
August 31, 2026·9 min read
#l-theanine#safety
Suntheanine vs L-Theanine: Is the Trademark Worth Paying For?
Nootropics

Suntheanine vs L-Theanine: Is the Trademark Worth Paying For?

Suntheanine vs generic L-theanine compared on manufacturing, purity data, real studies, and price per dose, with an honest verdict on which to buy.

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Roon Team
August 29, 2026·8 min read
#l-theanine
Can L-Theanine Cause Anxiety? What the Research Actually Shows
Nootropics

Can L-Theanine Cause Anxiety? What the Research Actually Shows

Can L-theanine actually cause anxiety? What clinical trials show, why paradoxical reactions are unreported, and what's likely happening instead.

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Roon Team
August 29, 2026·8 min read
#l-theanine#anxiety
What Is Suntheanine? The Patented L-Theanine on Your Supplement Label
Nootropics

What Is Suntheanine? The Patented L-Theanine on Your Supplement Label

Suntheanine is Taiyo's patented, enzymatically made L-theanine. See how it's made, the GRAS status, and what the human studies actually show.

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Roon Team
August 26, 2026·9 min read
#l-theanine
L-Theanine Interactions: Every Medication Class, Ranked by Evidence
Nootropics

L-Theanine Interactions: Every Medication Class, Ranked by Evidence

What MSK, NCCIH, Drugs.com and WebMD actually say about L-theanine interactions, plus a drug-by-drug table ranked by real evidence level.

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Roon Team
August 26, 2026·9 min read
#l-theanine
L-Theanine Amazon: The Complete Guide to Finding a Supplement That Actually Works
Nootropics

L-Theanine Amazon: The Complete Guide to Finding a Supplement That Actually Works

Shopping for L-theanine on Amazon? Learn what to look for before you buy, from dosage and quality to trusted brands that actually deliver results.

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Roon Team
May 26, 2026·8 min read
#l-theanine#supplements#reviews
L-Theanine in Pregnancy: What the Science Actually Says
Wellness

L-Theanine in Pregnancy: What the Science Actually Says

Wondering about L theanine in pregnancy? Get the honest, science-backed answers on safety, risks, and what experts actually recommend for pregnant women.

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Roon Team
May 25, 2026·8 min read
#l-theanine#safety#anxiety
L-Theanine Pregnancy: What the Science Actually Says
Wellness

L-Theanine Pregnancy: What the Science Actually Says

Considering l-theanine during pregnancy? Get the honest truth about safety, research gaps, and what doctors actually recommend before taking any supplem...

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Roon Team
May 25, 2026·9 min read
#l-theanine#anxiety#safety
L-Theanine Mechanism of Action
Nootropics

L-Theanine Mechanism of Action

Discover exactly how L-theanine works in your brain, from neurotransmitter effects to caffeine synergy. A complete guide to its mechanism of action.

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Roon Team
May 25, 2026·8 min read
#l-theanine#caffeine#focus
L-Theanine Powder: The Complete Guide to Dosing, Benefits, and What Actually Works
Nootropics

L-Theanine Powder: The Complete Guide to Dosing, Benefits, and What Actually Works

Discover how l theanine powder works, optimal dosing strategies, proven benefits, and what the science actually says about this calming amino acid.

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Roon Team
May 24, 2026·8 min read
#l-theanine#supplements#clinical research
L-Theanine at Walmart: The Complete Guide to Buying Smarter
Nootropics

L-Theanine at Walmart: The Complete Guide to Buying Smarter

Shopping for L-theanine at Walmart? Learn which brands are worth buying, what doses to look for, and how to avoid wasting money on low-quality supplements.

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Roon Team
May 24, 2026·9 min read
#l-theanine#supplements#reviews
L-Theanine Half-Life: What the Science Actually Says
Nootropics

L-Theanine Half-Life: What the Science Actually Says

Discover how long L-theanine stays in your system, when to take it, and how to time it with caffeine for optimal focus and calm.

R
Roon Team
May 24, 2026·8 min read
#l-theanine#caffeine#focus+1
L-Theanine When to Take: The Complete Timing Guide for Focus
Nootropics

L-Theanine When to Take: The Complete Timing Guide for Focus

Discover the best time to take L-theanine for focus, calm, or sleep. Learn how timing affects results and how to optimize your dose throughout the day.

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Roon Team
May 24, 2026·8 min read
#l-theanine#focus#sleep+1
L-Theanine Gummies: The Complete Guide to What Works
Nootropics

L-Theanine Gummies: The Complete Guide to What Works

Discover what works and what doesn't with l theanine gummies. Get the full breakdown on dosing, benefits, top picks, and better alternatives.

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Roon Team
May 23, 2026·8 min read
#l-theanine#gum#reviews+1
L-Theanine Medication Interactions
Science

L-Theanine Medication Interactions

Which drugs interact with L-theanine? Memorial Sloan Kettering names one. Here is that list, plus the blood pressure and sedative cautions.

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Roon Team
May 23, 2026·8 min read
#l-theanine#safety#clinical research
L-Theanine for Anxiety: What the Science Actually Says
Science

L-Theanine for Anxiety: What the Science Actually Says

Does l-theanine actually help with anxiety? We break down the real science behind this popular supplement so you know what to expect before you try it.

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Roon Team
May 22, 2026·8 min read
#l-theanine#anxiety#clinical research
L-Theanine for Dogs
Wellness

L-Theanine for Dogs

Does l theanine for dogs actually work? Discover what the science says about dosing, safety, and calming anxious or stressed dogs naturally.

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Roon Team
May 21, 2026·8 min read
#l-theanine#anxiety#pets+1