Theanine

Amino Acids

Theanine

L‑theanine is a calming amino acid (found in tea) that promotes relaxed alertness—reducing stress and anxiety and improving focus without drowsiness. It may also help improve sleep quality, blunt stress‑related blood pressure spikes, and enhance cognitive performance when combined with caffeine.

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Key Facts

L-theanine is an amino acid found naturally in tea that supports a calm, focused mental state without sedation
Works by increasing alpha brain waves and enhancing neurotransmitters like serotonin and GABA involved in stress regulation
Supports mental clarity, relaxation, and a healthy stress response — useful for anyone balancing focus with calm

Ingredients

L-theanine, calcium laurate, hypromellose capsule, leucine, microcrystalline cellulose.

Why We Chose This

Thorne's theanine addresses the common challenge of needing focus without jitteriness or anxiety. The 200 mg dose is clinically studied and designed to shift your brain toward a relaxed-yet-alert state — similar to the calm focus many people experience after a cup of tea, but in a consistent, standardized form. This formulation supports your nervous system's natural ability to manage stress while maintaining mental performance, making it practical for work, study, or everyday moments when you need both clarity and composure.

Other Amino Acids

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Glycine

Glycine is a simple, naturally occurring amino acid that supports restful sleep, a calm nervous system, and healthy collagen production. It may help with sleep disturbances, stress-related tension, muscle and joint recovery, and signs of skin aging.

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L-Glutamine

L‑Glutamine is a conditionally essential amino acid that fuels muscle recovery, supports immune function, and helps repair the intestinal lining. It may reduce post‑workout soreness, speed recovery after intense training, and support digestive health issues like gut permeability and IBS symptoms.

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L-Glutamine Powder

L-Glutamine Powder is a pure amino acid supplement that helps replenish glutamine used during intense exercise to support faster muscle recovery and reduce post-workout soreness. It may also support immune function and gut health by helping maintain intestinal barrier integrity and aiding recovery from digestive stress.

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PharmaGABA-250

PharmaGABA-250 delivers 250 mg of naturally fermented GABA to support relaxation and a calm mood, helping promote restful sleep. It may help with everyday stress, occasional sleeplessness, and mild nervous tension.

Learn more

PharmaGABA-100

PharmaGABA-100 is a fermented, bioavailable form of the neurotransmitter GABA designed to promote relaxation and calm. It may help reduce stress and anxiety, support restful sleep, and promote a balanced mood to help you unwind and recover.

Learn more

Frequently Asked Questions About Theanine

What is the supporting research for the benefits of theanine?

L-theanine is associated with reduced anxiety, sleep disturbance, and cognitive impairments. (clinical study in stress)
A single dose of L-theanine is associated with improved attention and reaction time. (EEG and attention study)
L-theanine appears to significantly reduce anxiety and improve sleep quality. (systematic review of L-theanine)

How do I take theanine?

Take 100-200 mg daily, typically in capsule form with water, adjusting based on your response.

For sleep support, take 200-400 mg about 30-60 minutes before bed to help ease into relaxation.

Can I take theanine with other supplements or medications?

L-Theanine is generally well-tolerated with most supplements, though it may interact with blood pressure medications, sedatives, and stimulants — so check with your healthcare provider before combining. Caffeine supplements should be avoided since they work against theanine's calming effects.

Who might benefit from taking theanine?

Anyone managing stress or seeking mental clarity benefits from theanine's ability to boost calming neurotransmitters like GABA and serotonin. Those struggling with focus, anxiety, or sleep quality find it particularly helpful for supporting relaxation without the drowsiness that other options might bring.

How long does it typically take to notice effects of theanine?

Most people notice theanine's calming effects within 30 to 60 minutes of taking it, with peak effects around the one-hour mark. Individual timing varies based on whether you take it on an empty stomach and personal absorption rates.

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