Isolated, purified and encapsulated nattokinase, an enzyme derived from boiled soybeans and Bacillus subtilis natto. Nattokinase NSK-SD was the first nattokinase introduced into the U.S. market, and it has established standa...

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Product Review

Isolated, purified and encapsulated nattokinase, an enzyme derived from boiled soybeans and Bacillus subtilis natto. Nattokinase NSK-SD was the first nattokinase introduced into the U.S. market, and it has established standardization and quality levels for all nattokinase, with comprehensive safety studies and proven potency. It is vegetarian, non-irradiated, and free of vitamin K2. NSK-SD has two Japanese and three U.S. patents, and is recognized by the JHFA (Japan Health and Nutrition Food Authorization) and JNKA (Japan Nattokinase Association) as authentic nattokinase. Each batch is tested to ensure potency. NSK-SD is a trademark of Japan BioScience Laboratory.

  • Circulatory Support Supplement: Allergy Research Group Nattokinase 100 mg provides nattokinase NSK-SD to support healthy blood flow, clotting and natural fibrinolytic activity*
  • Cardiovascular Wellness: Supports natural processes involved in circulation, normal clotting and vascular function for daily wellness*
  • Standardized Nattokinase: Delivers 100 mg (2000 FU) of NSK-SD produced from non-GMO fermented soybeans for consistent potency and quality
  • Highest Purity Standards: This supplement is made from vegan-derived, non-GMO soybeans
  • Solutions Backed by Science: Allergy Research Group and its family of brands—Metabolic Maintenance, MethylPro, Nutricology and Optimox—have delivered trusted supplements for more than 45 years

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