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Source Naturals, Nattokinase NSK-SD, 36 mg, 90 Softgels

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In Stock
  • Expiration Date: Feb 2020
  • Shipping Weight: 0.14 lbs (0.06 kg)
  • Product Code: SNS-01725
  • UPC Code: 021078017257
  • Package Quantity: 90 Softgels
  • Dimensions: 2 x 2 x 3.6 in, 0.1 lbs (0.05 kg)
Product Overview


  • Systemic Enzyme For Healthy Circulation
  • Dietary Supplement

Nattokinase is a systemic enzyme isolated from the traditional Japanese soy food, natto. It has been shown to support healthy blood flow by assisting the circulatory clearing system of the body.*

Suggested Use

1 to 2 softgels three times daily on an empty stomach with 8 ounces of water.

Other Ingredients

Soybean oil, gelatin, glycerin, beeswax, glycerin fatty acid ester, and soybean lecithin.

Contains no yeast, dairy, egg, gluten, or wheat. Contains no sugar, salt, preservatives, or artificial color, flavor or fragrance.


Do not use if you have a blood coagulation or blood pressure disorder. Consult your health care professional before taking this product if you are taking any drug that effects blood coagulation or blood pressure such as prescription vitamin K, heparin, warfarin (Coumadin), diuretics, ACE inhibitors, or beta blockers, or if you are pregnant, may become pregnant, or breastfeeding.

Store in a cool, dry place.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 2 Softgels
Servings Per Container: 45
Amount Per Serving %DV
Nattokinase (NSK-SD)
Providing 1,440 Fibrinolytic Units (FU) of Activity
72 mg
†Daily Value not established
iHerb Customer Reviews

Good moderate dosage nattokinase product

Posted by 4736829291301494989 on Dec 03, 2014

I prefer this over Enzymedica's "Natto-K" product because the straight NSK-SD doesn't have anything else in it, and dosage is moderate. Supposed to help with lowering fibrinogen levels. (Try earthing/grounding for this too.) Recommend.

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Posted by Reviewer2989241 on Jun 08, 2012


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Instead of Natto

Posted by Reviewer1316551 on Nov 27, 2011

As I don't plan to include the natto made from fermanted soybeans in my diet and natto is reported to help to prevent and improve cardiovasuclar function,I take these instead. I like the small easy to take softgels.

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leg pain

Posted by Reviewer1192669 on Oct 24, 2011

poor circulation in my leg has been inproved and the pain has been eliminated after uising the product for a couple of monthe

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Posted by Reviewer2140768 on Apr 23, 2008

Good product; after a couple weeks use it seems to enhance circulation and energy levels.

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