high purity L theanine capsules bulk

Product Overview

L-Theanine Capsules are a premium nutraceutical product delivering L-theanine, a naturally occurring amino acid primarily found in green tea. Widely recognized for its calming properties without sedation, L-theanine is increasingly used in Nutritional Ingredients, Sports Nutrition Ingredients, and anti-stress formulations targeting cognitive health and relaxation.

As global demand rises for stress management, sleep support, and mental wellness solutions, L-theanine capsules have become a core product in Supplement Contract Manufacturing. B2B buyers prioritize high purity, stable supply, and flexible Capsule Manufacturing capabilities for private label and OEM development.

Content Note: Prepared by our technical team based on current scientific literature. Health claims comply with FDA/EFSA guidelines. Last reviewed: April 2026

According to a study in Journal of Clinical Psychiatry (2019), L-theanine supplementation may support stress reduction and improve sleep quality in adults.

Research published in Nutrients (2016) suggests L-theanine may promote relaxation by influencing alpha brain wave activity without causing drowsiness.

Key Ingredients & Specifications

Our L-theanine capsules are manufactured using high-quality fermentation-derived L-theanine, ensuring purity and consistency suitable for global Herbal Extracts and Standardized Extracts markets.

Differentiation Content

L-Theanine vs Other Relaxation Ingredients

Recommended Formulation Combinations

• L-Theanine 200 mg + Magnesium (relaxation support)
• L-Theanine 100 mg + Melatonin 3 mg (sleep formula)
• L-Theanine 200 mg + Caffeine 50 mg (focus & calm energy)
• L-Theanine 150 mg + Ashwagandha extract (stress management)

Applications & Benefits

L-theanine capsules are widely used in the following sectors:

• Stress Management Supplements: Core ingredient in anti-stress and relaxation formulas
• Sleep Support Products: Combined with melatonin and herbal extracts
• Sports Nutrition: Enhances focus in sports nutrition ingredients
• Functional Beverages: Used in calming drinks and superfood blends

Studies suggest L-theanine may support:

• Relaxation without drowsiness
• Improved focus and cognitive performance
• Stress and anxiety management
• Sleep quality enhancement

Why Choose Us – Quality, Certifications & OEM Capability

We provide full-service L-theanine capsule solutions for global nutraceutical brands.

• Certifications: ISO, HACCP, GMP, Kosher, Halal
• Raw Material Source: Fermentation-derived L-theanine
• Dosage Forms: Capsule manufacturing, tablet manufacturing, powders, gummies
• MOQ: Starting from 5,000 bottles
• OEM Services: Private label, formula customization, packaging design
• Lead Time: 3–4 weeks
• Compliance: Documentation support for FDA and EFSA markets

Buyer Insight: L-theanine products combined with caffeine or adaptogens are trending in the US and EU nootropic supplement markets.

Frequently Asked Questions

What is the typical dosage of L-theanine in capsules?

Common dosages range from 100 mg to 200 mg per capsule, depending on formulation goals.

Is L-theanine suitable for daily use?

L-theanine is generally well tolerated and commonly used in daily stress management supplements, subject to regulatory guidelines.

Do you offer vegan capsules?

Yes, we provide HPMC vegetarian capsules suitable for vegan formulations.

Can L-theanine be combined with caffeine?

Yes, L-theanine is often paired with caffeine to promote balanced energy and improved focus.

Do you support private label services?

Yes, we offer full supplement contract manufacturing including branding, packaging, and customized formulations.