Jarrow Formulas Theanine is a theanine supplement that helps you stay relaxed without drowsiness, supporting mood and calm focus throughout busy days. The product uses SunTheanine, an enzymatically produced form identical to the natural compound in green tea, helping ensure consistent strength and effects. Jarrow Formulas is known for rigorous quality standards and science-backed formulations, keeping ingredients vegan, gluten-free and non-GMO. Relaxation without the heaviness supports daily tasks.

Available Sizes & Variants:

60 capsules theanine capsules - Standard daily dose option for ongoing stress support.

Benefits & Features:

• Promotes calm without drowsiness.
• SunTheanine provides a consistent, enzymatically produced form identical to the natural compound in green tea.
• Vegan, gluten-free and non-GMO ingredients support clean, worry-free supplementation.
• Love for science runs through every bottle, with strict manufacturing standards and quality checks.
• L-Theanine supports relaxation by helping regulate brain chemicals and alpha wave activity, which can help with stress and mood while avoiding drowsiness that slows you down.

Jarrow Formulas has built a reputation on science-backed supplements and strict quality control. The Theanine formula uses SunTheanine, an enzymatically produced form identical to the green tea version, ensuring consistent strength. The brand’s cGMP compliant manufacturing and vegan, gluten-free ingredients underline a commitment to purity. For holistic wellness, customers sometimes pair a theanine supplement with other supportive products like probiotics for gut health or a vitamin d supplement to round out daily nutrition.

L-Theanine

• GTIN: 790011150503
• Manufacturer: Jarrow Formulas
• Size: 100mg
• Categories: Jarrow Formulas
• 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 of Jarrow Formulas Theanine 100mg daily, preferably on an empty stomach or with food for optimal absorption. Store in a cool, dry place. Keep out of reach of children. Consult a healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-Theanine (SunTheanine)

L-Theanine functions as a natural amino acid found in green tea that helps promote a calm state without making you sleepy.

This form uses SunTheanine, an enzymatically produced version identical to the natural compound in tea, which helps ensure consistent strength and quality.

What Does L-Theanine Do?

L-Theanine is involved in promoting relaxation through alpha-brain wave activity and may influence neurotransmitters such as dopamine and serotonin, supporting mood and focus in a calm, daytime context.

This information aligns with general guidance on normal brain function and stress response, including notes on relaxation and cognitive steadying without sedation.

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

Jarrow Formulas leads with a science‑driven approach to quality, which aligns with Welzo's commitment to rigorous product standards. This brand’s dedication to clean, well‑characterised ingredients and its long-standing reputation for evidence‑based formulations make it a trusted partner for our supplement line.

This product centrepieces SunTheanine, an enzyme‑produced form of L‑theanine that mirrors the natural compound found in green tea, underscoring the brand’s emphasis on consistency and purity. Jarrow Formulas maintains strict manufacturing discipline under cGMP practices and collaborates with suppliers who share those standards, reinforcing the reliability we require for Welzo customers. For a closer look at how we verify quality, you can explore the standards we enforce.

Our medical team evaluated Jarrow Formulas for credibility, manufacturing rigour and product fit, recognising this brand’s focus on relaxation support without drowsiness and its potential mood and learning benefits. This makes Jarrow Formulas Theanine a natural fit for a calming, focused supplement within our portfolio. Learn more about our approach from our medical team.