What is the recommended dosage for L-Theanine?

General: 100-200 mg/day; With Caffeine: 200 mg L-theanine + 100 mg caffeine

What are the side effects of L-Theanine?

Potential side effects include: Generally very well-tolerated, Mild drowsiness in sensitive individuals, Mild headache (rare).

L-theanine is an amino acid found primarily in green and black tea. It has been studied for its ability to promote alpha brain wave activity, which is associated with a state of calm alertness. Research suggests it may support attention, focus, and relaxation without sedation.

What dosage of L-Theanine has been used in studies?

Clinical studies have commonly used 100 mg to 400 mg of L-theanine daily. A popular research dose is 200 mg taken once or twice daily. Some studies have combined L-theanine with caffeine for synergistic effects on attention. Consult your healthcare provider for guidance.

What are the potential side effects of L-Theanine?

L-theanine has a strong safety profile and is generally well tolerated. Rare side effects may include headache and gastrointestinal discomfort. It may enhance the effects of blood pressure-lowering medications. Consult your healthcare provider if you take antihypertensive drugs.

L-Theanine
L-Theanine

amino_acid

Noto anche come: Theanine, Gamma-Glutamylethylamide, Suntheanine

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About

L-Theanine is an amino acid found primarily in green tea that crosses the blood-brain barrier to increase alpha brainwave activity associated with calm alertness. The L-theanine + caffeine combination is one of the most replicated nootropic pairings, consistently showing improvements in attention, task switching, and alertness without jitteriness.

How It Works

Crosses the blood-brain barrier and increases alpha brainwave activity associated with calm alertness; enhances GABA, serotonin, and dopamine levels; synergizes with caffeine to improve attention without jitteriness; reduces glutamate excitotoxicity.

Evidence For Conditions

Condizione	Grado	Studi	Partecipanti
Attention & Focus Difficulties	B	20	1500	Visualizza →
Anxiety-Related Cognitive Impairment	C	8	500	Visualizza →
Sleep-Related Cognitive Impairment	C	6	400	Visualizza →

Side Effects

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

Drug & Supplement Interactions

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

Informare sempre il proprio medico di tutti gli integratori che si assumono.Informate sempre il vostro medico di tutti gli integratori che assumete.

Related Ingredients

N-Acetyl Cysteine Taurine Acetyl-L-Carnitine

Informazioni rapide

Dosaggio: General: 100-200 mg/day; With_Caffeine: 200 mg L-theanine + 100 mg caffeine
Forme: capsule tablet powder
Fonti naturali: Green tea (Camellia sinensis), Certain mushrooms
Limite massimo: 900 mg/day (no adverse effects observed in studies)
Momento migliore: Morning or as needed; rapid onset (30-60 minutes)

Riepilogo delle evidenze

Attention & Focus Difficulties B

Anxiety-Related Cognitive Impairment C

Sleep-Related Cognitive Impairment C

Avvertenza FDA: Queste affermazioni non sono state valutate dalla Food and Drug Administration. I prodotti e le informazioni presenti su questo sito web non sono destinati a diagnosticare, trattare, curare o prevenire alcuna malattia. I gradi di evidenza presentati si basano sulla nostra analisi della ricerca pubblicata e sottoposta a revisione paritaria e non costituiscono consulenza medica. Consultate sempre il vostro medico prima di iniziare qualsiasi regime di integrazione.