It's time for Spring Savings!

Stock up today and use code Spring23 at checkout to receive 15% off + Free Shipping on one online order now through March 26, 2023.**

Learn more about Pure Patient Direct, our NEW virtual dispensary available now.

NSK-SD™ (Nattokinase) 100 mg

NS11/ NS16
Supports healthy fibrinolytic activity and blood flow
Starting From $75.50



Retail Price

Benefits & Features

  • Helps maintain the body's natural fibrinolytic processes
  • Promotes healthy blood flow
  • Supports healthy clotting function
  • Based on traditional Japanese practices
  • Small capsules for easy swallowing
  • Made with vegan ingredients


  • Ages 18 and up
  • Healthy fibrinolytic, blood flow and clotting support

Suggested Use

As a dietary supplement, take 1 capsule 2 times daily, 12 hours apart, with or between meals.

Science & Research

Verifiable Science

Nattokinase, a fibrinolytic enyzme isolated from Japanese natto, helps to maintain healthy activity of the body's natural clotting and fibrinolytic processes.1 In an animal study conducted by Biotechnology Research Laboratories and JCR Pharmaceuticals of Kobe, Japan, nattokinase promoted healthy blood flow.2 Furthermore, researchers from JCR Pharmaceuticals, Oklahoma State University and Miyazaki Medical College indicated that nattokinase supports healthy clotting function compared to placebo.3 In 1995, scientists at the Miyazaki Medical College and Kurashiki University in Japan demonstrated the potential for nattokinase to support blood vessel health in human subjects.4 This product is contraindicated for individuals with a history of bleeding tendency or with conditions associated with bleeding. Due to potential synergistic effects, concurrent use with anticoagulant and blood pressure medicationsshould be closely supervised by a health professional.


  1. Urano T, et al. J Biol Chem. 2001 Jul 6;276(27):24690-6.
  2. Fujita M, et al. Biol Pharm Bull. 1995 Oct;18(10):1387-91.
  3. Sumi H, et al. Experientia. 1987 Oct 15;43(10):1110-1.
  4. Maruyama M, et al. Basic and Clinical Aspects of Japanese Traditional Food Natto. 1998;1-3.


Gluten Free GMO Free Vegan Vegetarian

Additional Information


Not to be taken by pregnant or lactating women. If you have any health condition or are taking any medication, consult your health professional before use.


Store in a cool, dry place.


  • Natto is produced by a fermentation process when Bacillus natto (also known as Bacillus subtilis natto) is added to boiled soybeans. Nattokinase, a fibrinolytic enzyme, is isolated from natto. NSK-SD® is a registered trademark of Japan Bio Science Laboratories