iizuka shoukai SUPPLEMENTS

Premium Japanese Ingredients for Supplements

Source high-quality functional ingredients directly from Japan or develop your custom supplement line with our OEM partners.

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Call:  +81 90 7216 9529
01

Functional Ingredients

Looking for premium Japanese raw materials? Browse our catalog of clinically-backed ingredients: oyster extract, pearl powder, fermented soy protein, nattokinase, and more.

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02

OEM Manufacturing

Need a finished product? We connect you with certified Japanese manufacturers for tablets, capsules, powders, and sachets. From formulation to packaging.

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WHY JAPAN. WHY US.

Trusted Source for Global Supplement Brands

Japan is known for strict quality standards, advanced R&D, and unique functional ingredients unavailable elsewhere. We bridge the gap between Japanese manufacturers and international brands — handling documentation, logistics, and communication so you can focus on your product.

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01

Direct from Manufacturers

No middlemen. We work directly with Japanese ingredient producers and OEM factories.

02

Full Documentation

COA, specifications, MSDS, GMP certificates — everything you need for registration and import.

03

Global Shipping

Experience with export to USA, EU, CIS, UAE, and Asia. We handle logistics and customs paperwork.

Iizuka Shoukai LLC
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Let's find the right ingredient for your product

Tell us about your project — target market, dosage form, budget. We'll match you with the best Japanese solution

FEATURED INGREDIENTS

From Our Catalog

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Marine Collagen

Low-Molecular Marine Collagen with Chondroitin Sulfate

Low-molecular shark fin collagen peptide (~3,000 Da) with naturally occurring chondroitin sulfate and mucopolysaccharides. Superior moisture retention for skin and joint health supplements. Sourced from Kesennuma, Japan. Bulk supply from Iizuka Shoukai.
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Fermented Ingredients

Triple-Fermented Barley Powder for Dopamine & Gut-Brain Axis

Japanese triple-fermented barley extract powder — patented for RLS relief, clinically shown to boost dopamine production 660%. Bulk ingredient for gut health, sleep, and brain health supplements. Made in Japan.
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Postbiotics

Fermented Vegetables Extract

Discover the Japanese Fermented Vegetable Extract. A clinically studied postbiotic ingredient for alcohol metabolism, gut-skin axis support, and beauty-from-within. Sourced from 40+ botanicals.

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