L-Theanine capsules support relaxation and sleep | Ausreson

Dosage Form: capsules

Dose: 2 capsules per day

OEM: Customized logo is welcome, Packing as your requirement. offering private label

Type of Product: L-Theanine capsules

Model Number: ASRN-L-Theanine capsules

Specification: 500mg,800mg/bottle or customized

Sample: L-Theanine capsules Avaliable

Keywords: L-Theanine capsules

Brand: Ausreson

MOQ: 50 bottles

Appearance: capsules

Storage: Cool Dry Place

Shelf Life: 2 Years

Test Method: HPLC

Last updated: April 2026

What is L-theanine?

Found almost exclusively in green tea (Camellia sinensis), L-Theanine is an amino acid famous for its ability to cross the blood-brain barrier. In clinical settings, it boosts levels of GABA, serotonin, and dopamine—the neurochemicals responsible for mood regulation.

The result? A state of "relaxed alertness."

• No sedation (you won’t fall asleep at your desk).

• No jitters (unlike caffeine).

• Just a clear, steady focus.

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Why EU & US Consumers Are Switching to Capsules

While you can drink 5 cups of Matcha to get 100mg of L-Theanine, capsules offer precision and potency.

Clinical studies (published in Nutrients, 2019) show that 200mg to 400mg of L-Theanine significantly reduces subjective stress in healthy adults. Capsules give you this exact dose without the calories or liquid volume.

For remote workers in the EU and creatives in the US, the L-Theanine + Caffeine stack is the gold standard in nootropics. Taking L-Theanine alongside your morning coffee smooths out the caffeine spike, eliminating the "crash" by 4 PM.

Struggling with racing thoughts at 2 AM? L-Theanine doesn't force sleep like melatonin; it quiets the "monkey mind." It is the preferred natural supplement for improved sleep quality across German and UK markets.

Who Should Take L-Theanine Capsules? 

• The Corporate Professional (30-50): Needs to lower cortisol during quarterly reports.

• The Student (18-25): Needs exam focus without prescription stimulants (like Adderall).

• The Perimenopausal Woman (40-60): Hot flashes and night wakings? L-Theanine reduces the frequency of stress-induced wake-ups.

• The Biohacker: Stacking L-Theanine with Ashwagandha KSM-66 for deep recovery.

How to Choose the Best L-Theanine Capsule

1. Suntheanine®: This is the patented, clinically studied form of L-Theanine. It is pure and bioavailable. If the bottle doesn't say Suntheanine, the quality may vary.

2. Vegan & Non-GMO: Mandatory for the EU and US West Coast markets.

3. Third-Party Tested: Look for seals from USP, NSF, or Labdoor.

4. Clean Fillers: Avoid capsules with titanium dioxide or magnesium stearate (magnesium stearate is fine; titanium dioxide is banned in the EU).

Frequently Asked Questions.

Q: Can I take L-theanine capsules daily?

A: Yes. L-theanine is FDA-recognized as “GRAS” (Generally Recognized As Safe). There is no indication of tolerance buildup, making it suitable for daily use.

Q: How long will it take to feel the effects?

A: Most users report a noticeable “calm and focused feeling” within 30 to 60 minutes after taking it.

Q: Is L-theanine safe to use with prescription anti-anxiety medications?

A: Although L-theanine is natural, it may interact with some antihypertensive medications or sedatives. If you are in a healthcare system such as the UK NHS or have US insurance, consult your primary care physician before starting a new supplement regimen.

Q: What is the ideal dosage?

A: For general relaxation, 100mg to 200mg is the standard dose. For intense focus when paired with coffee, the biohacking community widely recommends a 1:2 ratio (100mg caffeine to 200mg L-theanine).

About us

Private Label design, fast delivery, USA Warehouse, European Warehouse, capsules factory,Softgels factory,tablets factory, pills factory, Gummies factory, Liquid Drops factory,Gum factory,solid beverage factory, customized factory, capsules manufacturer,Softgels manufacturer, tablets manufacturer, pills manufacturer, Gummies manufacturer, Liquid Drops manufacturer,Gum manufacturer,solid beverage manufacturer, customized manufacturer.

Our advantage

We possess extensive experience, handling every step from sourcing each ingredient in the formulation to post-filling inspection, all at the most competitive prices and with the fastest delivery times.

InterlGroup owns factory, Main Product Foods additives, Nutritional supplements, Healthcare Products(capsules,Softgels,tablets,Gummies,Liquid Drops,Gum,solid beverage and other customized products), plant extracts.

Support OEM&ODM service，Design label packaging, Overseas in stock, Fast customization, Drop Shipping.

Intergroup is supplying OEM service for the Well-known brands Reson and Ausreson. 

Alibaba International Station No.1 supplier,  Alibaba International Station Number 1, Alibaba International Station Number one.

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