$44.99($0.75/serving)

Recommended use:
1 Capsule
Servings per container:
60 Servings
Price per serving:
$0.75
Price per Unit*:
$0.75 per Capsule

*Price Per Unit may reflect product's price per capsule, ounce, fluid ounce, etc.

Egg Free
Fish Free
Gluten Free
GMP
Made in the USA
Nut Free
Peanut Free
Wheat Free
Yeast Free
Crustacean Shellfish Free

1 capsule‚ 2 times daily‚ 12 hours apart‚ with or between meals. Use is contraindicated in persons with history of bleeding tendency.

Serving Size: 1 Capsule
Serving Per Container: 60

Amount Per Serving / %DV

Nattokinase NSK-SD®‡ (supplying 2‚000 FUΔ) 100 mg / *

*Daily Value not established.

Other Ingredients: Microcrystalline cellulose‚ vegetarian capsule (hydroxypropyl methylcellulose‚ water)‚ L-leucine‚ and silicon dioxide.

ΔFibrinolytic units or fibrin degradation units (FU) is a measure of enzyme activity. Nattokinase NSK-SD® is standardized to contain 2‚000 FU per capsule.

‡NSK-SD® is a registered trademark of Japan BioScience Laboratory‚ Co.‚ Ltd.

Contains: Soy.

Free of the following common allergens: milk/casein‚ eggs‚ fish‚ shellfish‚ tree nuts‚ peanuts‚ wheat‚ gluten‚ and yeast. Contains no artificial colors‚ flavors‚ or preservatives.

Made in the USA. GMPs certified.

Contains: Soy.

If you are pregnant‚ nursing‚ have a medical condition‚ or taking prescription drugs‚ consult your physician before using this product. Keep out of reach of children.

Do not use if shrink-wrap is broken or missing. Store in a cool‚ dry place (59°F-85°F) away from direct light.

The product packaging you receive may contain more information than what is displayed on this page, or there may be additional details revealed by peeling back part of the label. To ensure safe use, always refer to the full information provided on the product packaging rather than relying solely on the details found on our website.

Product Description

PureFormulas is an authorized retailer of SFI Health products.
You can shop with confidence, knowing that all products purchased from PureFormulas are authentic, and sourced directly from the brand.

Nattokinase provides support for blood clotting, circulation and platelet function by aiding the body's natural fibrinolytic processes. This proteolytic enzyme is derived from a fermentation process of non-GMO soybean isolates using Bacillus subtilis natto, providing an effective dose that has been standardized to high levels of fibrin activity units without vitamin K present.

Klaire Labs® is now SFI Health™
Klaire Labs® has been part of the SFI Health family for many years leading the way in efficacy, safety, quality, and trusted by healthcare professionals to deliver better outcomes for their patients. We will be transitioning the Klaire Labs® brand to the SFI Health brand which will become more prominent on our packaging and materials. While we might be changing the way things look, you can be sure our commitment to consistency and quality will be as strong as always.

The Brand you Know and Love is Changing.
Rest assured that the ingredients and formulation remain the same. If you’re looking for something in particular, and can’t find it, it’s likely because the name changed. We’ll update this list as the new bottles and labels are in market so check back often.

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

  • MFG # NTK
  • UPC # 828054001060

Product Reviews

Product reviews solely reflect the views and opinions expressed by the contributors and not those of PureFormulas. PureFormulas does not verify or endorse any claims made in these reviews. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure or prevent any disease or health condition.