Nattokinase NSK-SD supports healthy circulation by promoting your body's natural clot dissolving processes, with nattokinase at the heart of the benefit. The key active ingredient, nattokinase NSK-SD, supports your body's natural fibrinolytic system so circulation stays balanced. Klaire Labs brings professional grade quality and a long history of trusted, allergen conscious supplements.

Available Sizes & Variants:

60 capsules - standard daily count for steady support.

Benefits & Features:

• Circulation improves through enhanced fibrinolytic activity.
• Nattokinase NSK-SD is the star ingredient, produced by traditional fermentation of non-GMO soy using Bacillus subtilis natto.
• Free from common allergens and vegan, with soy as the notable ingredient.
• Take one capsule twice daily, 12 hours apart, to help maintain your body's natural clot dissolving process and keep blood flow steady during daily activity.
• Contraindicated for those with bleeding disorders or on anticoagulants; consult a healthcare provider.

From its natto fermentation roots to a clean, allergen free formula, Nattokinase NSK-SD reflects Klaire Labs' practitioner focused heritage. The nattokinase NSK-SD active ingredient comes from non-GMO soy fermented with Bacillus subtilis natto, a process that mirrors traditional natto making. The product is vegan and free from common allergens, making it accessible to many health routines. For shoppers exploring gut and cardiovascular support, Klaire's quality standards and clear ingredient lists stand out in a crowded market. If you’re browsing probiotics, a vitamin d supplement, or even berberine, this line sits alongside those trusted options.

(other) Microcrystalline cellulose, vegetarian capsule (hydroxypropyl methylcellulose, water), L-leucine, and silicon dioxide. Contains: Soy.

• GTIN: 828054001060
• Manufacturer: Klaire Labs
• Categories: Klaire LabsNattokinase SupplementsNew ArrivalsPopular Supplement Brands
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one capsule twice daily, 12 hours apart, with meals or on an empty stomach. Take 1 tablet daily

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Nattokinase NSK-SD (100 mg)

Nattokinase NSK-SD is a nattokinase enzyme obtained from the fermentation of non-GMO soy isolates with Bacillus subtilis natto, created for dietary supplements and sold in capsule form.

This vegan, allergen-free and vitamin-K free form mirrors a traditional fermentation method used to obtain nattokinase NSK-SD.

What Does Nattokinase NSK-SD Do?

Nattokinase directly breaks down fibrin, the protein mesh of clots, supporting your body’s natural fibrinolytic activity and helping to maintain balanced blood flow.

In research contexts, nattokinase is described as a serine protease that may influence components of the fibrinolytic system to promote clot dissolution, aligning with normal circulation and vascular function.

This supplement isn’t meant to diagnose, treat, cure or prevent any disease.

Klaire Labs is our go-to partner for Nattokinase NSK-SD since the brand has a long-standing track record as a trusted provider in professional circles. When we compare Klaire Labs with broader market suppliers, the brand’s strong presence in practitioner channels sticks out for its focus on quality, reliability and approachable support for healthcare professionals. This differentiator fits with our commitment to connect customers with brands that are embraced by Welzo's medical team for evidence-based, safe supplementation.

Our clinicians and nutritionists assess brands like Klaire Labs on credentials, openness and manufacturing philosophy. The team emphasises Klaire Labs as a reputable practitioner brand, with a clearly demonstrated emphasis on high standards of product quality and clinician familiarity. To support our collaboration, Klaire Labs is assessed through Welzo's really rigorous and thorough evaluation, ensuring alignment with our quality certification process and our internal vetting criteria. See how we bring together expertise from Welzo's healthcare professionals to inform these decisions.

This brand is well suited for Nattokinase NSK-SD, drawing on Klaire Labs’ professional heritage to offer a formulation that matches our focus on safety, purity and clear sourcing for the UK market.