Promotes healthy circulation and blood flow

Nattokinase (60 capsules, 1-month supply) | Nattokinase & Circulation Supplements

Item# NAT
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1 Bottle
Buy 3, Get 1 FREE
Was: $119.96
Now: $89.97
Buy 5, Get 2 FREE
Was: $209.93
Now: $149.95

Clinical grade, Japanese blood thinner

  • Supports normal circulation, blood flow, and blood viscosity
  • Helps naturally thin the blood
  • Helps maintain your body's normal blood-clotting mechanism

Nattokinase is a specialized enzyme in natto that was discovered in 1980 by Dr. Hiroyuki Sumi. Additional research has been done, including 17 published studies in Japan and here in the US, which shows it supports your body’s normal blood-clotting mechanisms and helps to maintain healthy blood flow.

Nattokinase is one of several enzymes related to your circulation. Fibrin, the enzyme that causes blood clotting, is usually broken down by another enzyme, plasmin. Plasmin aids normal platelet aggregation and circulation. But plasmin production declines with age. Nattokinase helps by facilitating blood flow the same way plasmin does, and also supports your body's natural production of plasmin.

My Nattokinase uses the patented NSK-SD™ formulation, which was developed with a special patented process that removes the vitamin K from the extract. Plus, this product gives you a full 2,000 FU (fibrin units) per day, the dosage supported by research.


Ingredients and Dosage

Doctor's Suggested Use: Take 1 capsule twice daily; 1 capsule with morning meal and 1 capsule before going to bed.

Serving Size: 1 Capsule
Servings Per Container: 60

Ingredient Amount Per Serving % DV
Nattokinase (from soybean) 25 mg *
* Daily Value (DV) not established

Other ingredients: Microcrystalline cellulose, gelatin, silicon dioxide, magnesium stearate


WARNING: If you take Coumadin (warfarin) or other blood thinning products, or are pregnant or lactating, consult a health care professional before taking this product.
Keep out of reach of children.

NSK-SD40® is a registered trademark of JBSL.

Each capsule provides 1,000 FU (fibrin units) nattokinase activity.

Standardization Levels: Nattokinase 40,000 FU per gram

Batch Information

Science and Quality

  • In a study of 15 healthy men and women, taking 100 mg (2,000 FU) of NSK-SD® significantly increased blood flow within 3 hours after ingestion.1
  • In a randomized, placebo-controlled trial, 86 participants received either 2,000 FU of nattokinase placebo daily for 8 weeks. The group receiving natto showed reduced blood pressure significantly more so (-2.84 mmHg) than the placebo group after 8 weeks. Plasma rennin also decreased significantly among those taking natto for 8 weeks.2

1 Improvement of blood flow increase by ingestion of NSK-II. Food Style 21 2006. 8:21.
2 Kim, et al. Hypertens Res. 2008;31(8):1583–88.

Product Quality

  • Manufactured to exacting standards using highest quality raw materials
  • Produced in accordance with our strict Standard Operating Procedures (SOPs) that meet or exceed those set by the FDA’s Good Manufacturing Practices
  • Every batch tested to verify purity and potency specifications are met
  • Details of specific product testing is listed in the Certificate of Quality
  • Quality assured with our Triple-Testing Philosophy™
  • Backed by our 100% satisfaction guarantee