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L-Theanine için Uykuya Dalma Güçlüğü

A

4 çalışmaya (2 meta-analyses, 1 RCT), toplam 590 katılımcıyla dayanmaktadır. 3/4 çalışma olumlu etkiler göstermektedir.

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A

Sonuç

Research suggests L-theanine may help you fall asleep faster, with strong supporting evidence from systematic reviews and clinical trials.

  • 3 out of 4 studies show positive effects, earning a Grade A evidence rating
  • A 2026 systematic review confirmed L-theanine's benefits for sleep onset
  • Combining L-theanine with GABA may enhance the sleep-onset effect
  • Benefits demonstrated in a 2024 double-blind, placebo-controlled clinical trial

Key Study Findings

systematic review n=550 Double-blind
Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials.
Dose: L-theanine 50-900 mg/day; effective range 200-450 mg/day vs: Placebo Etki: Beneficial effects on sleep latency, maintenance, efficiency; improved perceived sleep satisfaction None
In Vitro
GABA and l-theanine mixture decreases sleep latency and improves NREM sleep.
Dose: GABA/l-theanine 100/20 mg/kg vs: Placebo Etki: 20.7-14.9% decrease in sleep latency; 87.3-26.8% increase in sleep duration; REM +99.6%; NREM +20.6%
Systematic Review
To sleep or not to sleep: a systematic review of the literature of pharmacological treatments …
Dose: Zolpidem, L-theanine, clonidine, melatonin (doses not specified in abstract) vs: Placebo Etki: Melatonin: reduced sleep latency, higher total sleep time, higher sleep efficiency; Clonidine: reduc None

Key Statistics

4

Çalışmalar

590

Katılımcılar

Positive

A

Derece

Referenced Papers

Dosage & Usage

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

Yaygın Kullanılan Dozajlar

sleep:
200-400 mg, 30-60 min before bed

Üst sınır: Not established; generally safe up to 900 mg/day

Araştırmalarda İncelenen Dozajlar

Dozaj Süre Etki N
L-theanine 50-900 mg/day; effective range 200-450 mg/day -- Positive 550
None 8 weeks Positive 40
GABA/l-theanine 100/20 mg/kg -- Positive --
Zolpidem, L-theanine, clonidine, melatonin (doses not specified in abstract) -- Mixed --

En iyi alım zamanı: 30-60 minutes before bed

Safety & Side Effects

Bildirilen Yan Etkiler

  • Headache
  • Dizziness
  • GI discomfort

Bilinen Etkileşimler

  • Blood pressure medications — L-theanine may lower blood pressure
  • Stimulants (caffeine) — may partially counteract stimulant effects
  • Sedatives — potential additive calming effects

Tolere edilebilir üst alım: Not established; generally safe up to 900 mg/day

Herhangi bir takviye kullanmaya başlamadan önce mutlaka sağlık uzmanınıza danışın.Herhangi bir takviye başlatmadan önce her zaman sağlık uzmanınıza danışın.

Frequently Asked Questions

Does L-Theanine help with Uykuya Dalma Güçlüğü?
Based on 4 studies with 590 participants, there is strong evidence from multiple clinical trials that L-Theanine may support Uykuya Dalma Güçlüğü management. Our evidence grade is A (Strong Evidence).
How much L-Theanine should I take for Uykuya Dalma Güçlüğü?
Studies have used various dosages. A commonly studied range is 200-400 mg, 30-60 min before bed. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of L-Theanine?
Reported side effects may include Headache, Dizziness, GI discomfort. 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 Uykuya Dalma Güçlüğü?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 4 peer-reviewed studies with 590 total participants. The overall direction of effect is positive.

Related Evidence

Şu durum için diğer içerikler: Uykuya Dalma Güçlüğü

L-Theanine diğer sağlık durumları için

FDA Sorumluluk Reddi: Bu ifadeler Gıda ve İlaç Dairesi (FDA) tarafından değerlendirilmemiştir. Bu web sitesindeki ürünler ve bilgiler herhangi bir hastalığı teşhis etmek, tedavi etmek, iyileştirmek veya önlemek amacıyla tasarlanmamıştır. Sunulan kanıt dereceleri, yayımlanmış hakemli araştırmalarımızın analizine dayanmaktadır ve tıbbi tavsiye niteliği taşımamaktadır. Herhangi bir takviye rejimine başlamadan önce her zaman sağlık uzmanınıza danışın.