Theanine is a theanine supplement built to support relaxed focus and a calmer mood, helping you navigate busy days with clarity and composure. This relies on L-Theanine, the main active ingredient that helps calm focus. The brand behind these capsules, Jarrow Formulas, is noted for purity and strict quality controls. Sustainably made as vegan, non-GMO, gluten-free and free from common allergens, it fits neatly into most dietary needs.

Available Sizes & Variants:

60 capsules theanine supplement - convenient daily dosage.

Benefits & Features:

• Theanine supplement supports calm focus without sedation, helping you stay steady.
• Daily use helps keep effects consistent when taken on an empty stomach.
• Sustainably made with vegan, non-GMO ingredients to fit tight dietary needs.
• L-Theanine is the star ingredient that spotlights this capsule's calm focus.
• Manufactured in facilities meeting current good manufacturing practise, with rigorous testing and supplier verification, this ensures consistent strength, purity and allergy safety across every batch you rely on, day in and day out.

Jarrow Formulas has earned a loyal following thanks to science-led formulas and clear quality checks. Theanine 100 keeps it simple: one active ingredient, L-Theanine, supported by vegan, non-GMO, gluten-free ingredients. Fans appreciate steady calm and quiet focus without the heaviness of stronger sedatives. Manufacturing happens in facilities complying with current good manufacturing practise, so you know every capsule is up to standard and you can trust its strength and purity ride after ride. In a well rounded routine, some customers pair this with probiotics for gut health, while others complement their day with a vitamin d3 supplement.

Ingredients:
L-theanine, coating agent: hydroxypropylmethylcellulose (capsule); water, filler: methylcellulose; separating agent: magnesium salts from fatty acids (vegetable source), silicon dioxide

• GTIN: 790011150503
• Manufacturer: Hippocrates
• Categories: Jarrow FormulasNew Arrivals
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one capsule daily with water or juice on an empty stomach, or follow your healthcare professional's instructions. Adults: Take 1 capsule before each meal\, or more as directed by a health care professional.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: L-Theanine

L-Theanine is essentially an amino acid–like compound found naturally in green tea and is the sole active ingredient in this product. The formulation is vegan and gluten-free, with other capsule excipients including microcrystalline cellulose and magnesium stearate.

This form and source details reflect its identification as the main active nutrient in the product.

What Does L-Theanine Do?

L-Theanine helps support a calm, relaxed mental state and may promote relaxed focus in stressful moments. It also contributes to normal brain activity modulation and supports healthy neurotransmitter function, as outlined in EFSA-aligned nutrient guidance. Dr. Hidese of Osaka University found that higher alpha brain activity with L-Theanine ties to relaxation and better focus in stressful situations.

This section summarises how L-Theanine works within normal brain and mood regulation processes, without implying disease treatment or symptom relief.

*This product is not intended to diagnose, treat, cure, or prevent any disease.

Welzo chose Jarrow Formulas for Theanine because the brand lines up with our strict supplier criteria: manufacturing excellence, scientific grounding, and a clear commitment to purity and potency. Jarrow Formulas has built a reputation for science–driven formulations and cGMP compliant manufacturing, ensuring ingredients are evaluated for strength and composition as part of their quality ethos. This establishes a solid foundation for trusted supplements and positions Jarrow Formulas as a dependable partner in our portfolio. The brand’s emphasis on pure, vegan, non‑GMO and allergen‑friendly products further reinforces our confidence in its manufacturing philosophy. For those who want a deeper look at how we ensure quality, this brand is evaluated through our quality certification process, and discussed with our medical team when appropriate.

Product–wise, Jarrow Formulas Theanine fits well with Welzo's focus on targeted, well‑tolerated ingredients and transparent labelling, making it particularly suited for a calm‑focus supplement. This pairing reflects our belief that a reputable brand with strong manufacturing standards provides the best baseline for consumer trust. We are proud to endorse Jarrow Formulas as a trusted partner in our supplement ecosystem.