SFI Health Nattokinase NSK-SD is a powerful enzyme that supports healthy arteries, blood flow and circulation.
 
Each capsule contains 2,000 FU (fibrinolytic units) of nattokinase.
 
Derived from a highly purified extract of the traditional Japanese food natto, nattokinase is a natural, highly active enzyme that helps promote healthy fibrin levels. Fibrin is a filamentous protein formed in blood, which can accumulate along blood vessel walls and affect blood flow.
 
Suggested Use: 1 capsule, 2 times daily, 12 hours apart, with or between meals.
 
Do not use it if you take medications for blood thinning or aspirin or have a tendency to bleed easily.
 
Free of dairy, corn, GMOs, gluten, wheat, egg, fish, shellfish, and artificial preservatives and colors.
 
SFI Health Ultra K2 contains the Mk-4 form of vitamin K2, which is the most potent form of vitamin K for supporting healthy bones. Each capsule contains 15 mg (15,000 mcg) of Mk-4, k2.
The Mk-4 form of vitamin k2 is more effective than the standard mk-7 form found in most dietary supplements.
 
When choosing a good vitamin K supplement, it’s important to focus on those that push the most to the tissues and bones instead of the mistaken focus on blood levels. Lots of forms of nutrients can increase blood levels, but that does not mean that it has the most beneficial effects. MK-4 concentrates in tissues and organs, so it does not show up as much in blood tests as it is quickly moved and utilized by the body.
 
Research claiming that MK-7 is superior because of higher blood levels is focused on the wrong thing. Instead, the focus should be on health outcomes. At 45 milligrams per day, multiple human clinical trials have shown support for healthy bones. Our recommendation is to choose the type of vitamin K2 with proven health benefits, and that is MK-4. 
 
Check out our blog, Nourish Your Bones, for information on keeping your bones healthy.
 
Adults: 1 capsule 3 times daily with food or as directed by a healthcare professional.
Free of corn, soy, wheat, gluten, dairy, egg, tree nuts, peanuts, shellfish, fish, and artificial colors and preservatives.
Warnings: Do not use this if you take aspirin or blood thinning medication. 
 
SFI Health/Klaire Labs upholds strict independent third-party certification through US Pharmacopeia (USP) for Good Manufacturing Practices, as well as a certified Food Safety System Certification through SGS, which goes beyond that required by the International Organization for Standardization Food Safety Management (ISO 22000).
 
All suppliers undergo a qualification process, including risk-based auditing systems, so that materials can be closely monitored. Raw materials are also tested to ensure they meet label and safety requirements before they are used, and any materials that do not meet SFI Health’s requirements are rejected. Quality Assurance signs off on each phase of the manufacturing process before a product can be moved on. AQLs are maintained throughout with regular testing and visual checks for variations that may not be within specification. Equipment is meticulously maintained, and ongoing training ensures a high level of effectiveness. All cleaning procedures are validated and strict allergen controls prevent cross contaminations. 
 
They have received the FSSC 22000 Food Safety System Certification. This certification is recognised by the Global Food Safety Initiative (GFSI) and encompasses the international and independent standards for food safety: ISO 22000:2018, ISO/TS 22002-1, and FSSC’s additional demanding requirements.
 
This achievement validates SFI Health’s commitment to food safety, quality, and manufacturing excellence. The FSSC 22000 Certification demonstrates their commitment to controlling food safety hazards and minimizing risks in their production of safe dietary supplements.
The rigorous certification shows SFI Health’s Reno facility produces to standards above and beyond government regulations. 
 
Product safety: They analyze all raw materials, active ingredients and final products according to regulatory standards that are recognised and accepted worldwide.
Quality by design: They conduct effective planning to identify, measure, monitor and maintain the excellence of our product quality. They build this into our processes right from the start, adhering to quality risk management principles.
Knowledge management: Product and process knowledge is acquired, analysed, stored and disseminated throughout the product lifecycle, providing the means for science and risk-based decisions.
Continuous improvement: By defining clear objectives, and monitoring results they are able to make constant improvements to their products, processes and systems.
 
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.