L-Theanine für Anxiety-Related Cognitive Impairment

Research suggests L-theanine promotes relaxation without drowsiness and increases alpha brainwaves within 30-40 minutes of ingestion. It may help reduce anxiety-driven cognitive impairment.

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Fazit

Research suggests L-theanine promotes relaxation without drowsiness and increases alpha brainwaves within 30-40 minutes of ingestion. It may help reduce anxiety-driven cognitive impairment.

Key Study Findings

Randomized Controlled Trial 4.3 weeks Single-blind

Assessing brain function in stressed healthy individuals following the use of a combination of green …

Dose: None vs.: placebo Outcome: Brain response to stress and quality of life Wirkung: None p = 0.001

Population: Chronically stressed but healthy subjects

Randomized Controlled Trial n=46 10 weeks Double-blind

L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.

Dose: 450-900 mg L-theanine daily vs.: Placebo Wirkung: None p=0.73 (anxiety), p=0.35 (inso

Controlled Clinical Trial n=20 8 weeks Open-label

Effects of chronic l-theanine administration in patients with major depressive disorder: an open-label study.

Dose: 250 mg/day vs.: Placebo Outcome: HAMD-21 depression score, cognitive function Wirkung: None pp0.007

Population: Patients with major depressive disorder

Key Statistics

Studien

500

Teilnehmer

↑

Positive

Bewertung

Referenced Papers

Assessing brain function in stressed healthy individuals following the use of a combination of green tea, Rhodiola, magnesium, and B … Other

Frontiers in nutrition 2023 3 Zitierungen

L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial. RCT

Journal of psychiatric … 2019 46 Zitierungen

Effects of chronic l-theanine administration in patients with major depressive disorder: an open-label study. Other

Acta neuropsychiatrica 2017 84 Zitierungen

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Übliche Dosierungen

general:: 100-200 mg/day
withcaffeine:: 200 mg L-theanine + 100 mg caffeine

Obergrenze: 900 mg/day (no adverse effects observed in studies)

In der Forschung untersuchte Dosierungen

Dosierung	Dauer	Wirkung	N
None	4.3 weeks	Positive	--
450-900 mg L-theanine daily	10 weeks	Neutral	46
250 mg/day	8 weeks	Positive	20

Beste Einnahmezeit: Morning or as needed; rapid onset (30-60 minutes)

Safety & Side Effects

Gemeldete Nebenwirkungen

⚠ Generally very well-tolerated
⚠ Mild drowsiness in sensitive individuals
⚠ Mild headache (rare)

Bekannte Wechselwirkungen

● Antihypertensive drugs (may enhance blood pressure lowering)
● Stimulant medications (counteracts some stimulant side effects)
● Sedative medications (additive calming effects)

Tolerierbare Höchstaufnahmemenge: 900 mg/day (no adverse effects observed in studies)

Konsultieren Sie immer Ihren Arzt, bevor Sie ein Nahrungsergänzungsmittel einnehmen.Konsultieren Sie immer Ihren Arzt, bevor Sie ein Nahrungsergänzungsmittel einnehmen.

Frequently Asked Questions

Does L-Theanine help with Anxiety-Related Cognitive Impairment?

Based on 8 studies with 500 participants, there is limited but promising evidence that L-Theanine may support Anxiety-Related Cognitive Impairment management. Our evidence grade is C (Some Evidence).

How much L-Theanine should I take for Anxiety-Related Cognitive Impairment?

Studies have used various dosages. A commonly studied range is 100-200 mg/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of L-Theanine?

Reported side effects may include Generally very well-tolerated, Mild drowsiness in sensitive individuals, Mild headache (rare). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for L-Theanine and Anxiety-Related Cognitive Impairment?

We rate the evidence as Grade C (Some Evidence). This rating is based on 8 peer-reviewed studies with 500 total participants. The overall direction of effect is positive.

Related Evidence

Andere Inhaltsstoffe für Anxiety-Related Cognitive Impairment

Ashwagandha B

L-Theanine für andere Beschwerden

Attention & Focus Difficulties B Sleep-Related Cognitive Impairment C

Kurzfazit

Research suggests L-theanine promotes relaxation without drowsiness and increases alpha brainwaves within 30-40 minutes of ingestion. It may help reduce anxiety-driven cognitive impairment.

Evidence Strength52%

Moderate confidence

Studienübersicht

RCT (1)Meta (0)Other (7)

Alternativen vergleichen

Sehen Sie, wie andere Inhaltsstoffe bei dieser Beschwerde abschneiden.

Alle Inhaltsstoffe ansehen für Anxiety-Related Cognitive Impairment

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