Taiyo International (Taiyo Kagaku)
Minneapolis, Minnesota
Profile updated: April 2, 2026
Taiyo International Inc. is the US subsidiary of Taiyo Kagaku Co., Ltd., headquartered in Yokkaichi, Mie Prefecture, Japan. Established in the US in 1994 and based in Minneapolis, Minnesota, Taiyo is the producer of Suntheanine, a patented 100% pure L-theanine dietary supplement produced via a proprietary enzymatic process that mimics natural L-theanine production in green tea leaves. Suntheanine was granted FDA GRAS status in 2007. Taiyo also supplies SunFiber (partially hydrolyzed guar gum fiber) and matcha/green tea ingredients. The company operates additional subsidiaries in Germany (Taiyo GmbH, Stuttgart, est. 2012) and China (Taiyo Kagaku China, Shanghai, est. 2006).
Directory Listing — Records Reviewed
Public records and independent sources have been reviewed.
What this means →Min. OrderMOQ (Minimum Order Quantity)The smallest production run a manufacturer will accept for an order.
Not publicly disclosed
Lead TimeLead TimeThe time from order placement to finished product delivery.
Not publicly disclosed
Product Types
Suntheanine (L-Theanine), SunFiber (Partially Hydrolyzed Guar Gum), Matcha Ingredients, Green Tea Extracts
Capabilities
Patented Enzymatic L-Theanine Production, Branded Ingredient Supply (Suntheanine, SunFiber), FDA GRAS Status (Suntheanine, 2007), US Sales & Distribution (Minneapolis, MN), Clinical Research Support, Green Tea & Matcha Sourcing
Certifications
0 of 1 certification independently confirmed. What this means
Key Regulatory Concepts
Dietary supplement manufacturers must comply with 21 CFR Part 111 (Current Good Manufacturing Practice for dietary supplements). This includes requirements for personnel, facilities, equipment, production, laboratory operations, and record-keeping.
Review Notes
US subsidiary of Taiyo Kagaku (Yokkaichi, Japan), established 1994 in Minneapolis, MN. Suntheanine is one of the most recognized L-theanine branded ingredients in the supplement industry. FDA GRAS confirmed 2007. PubMed clinical studies (PMID 22214254, 31623400) confirm research backing. Taiyo GmbH (Germany) and Taiyo Kagaku China (Shanghai) document global expansion. Company history page confirms subsidiary timeline. Suntheanine.com provides dedicated consumer/brand education.
Sources
- Taiyo International Official Website — Company History(2026-04-02)
- Taiyo Kagaku — L-Theanine Product Page(2026-04-02)
Disclosures
- No material connection exists between Inventory Ready and this company
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