Nattokinase supports healthy blood flow by dissolving fibrin, helping smooth circulation, while Doctor's Best brings science based nutrition and clearly labelled vegan formulas, and it's trusted by many. This potent nattokinase dose comes from vegan, soy derived natto fermentation, designed to support healthy blood flow as part of nutritional supplements. This brand, Doctor's Best, is known for science based nutrition and clearly labelled vegan formulas, and it's trusted by many.

Available Sizes & Variants:

90 capsules - Daily nattokinase capsules for cardiovascular support.

Benefits & Features:

• Supports healthy blood flow, aiding smoother circulation.
• Nattokinase helps dissolve fibrin, supporting smoother circulation and heart comfort.
• Daily use supports cardiovascular wellness by helping maintain normal blood viscosity through fibrinolysis, promoting smoother circulation and relieving occasional stress on the heart, even during busy, demanding days.
• Vegan soy derived nattokinase aligns with clean label expectations and suits those avoiding animal products.
• Well tolerated by many, but always check with a clinician if you’re on anticoagulants or have soy allergies, as nattokinase may interact with certain medications.

Nattokinase comes from natto, the traditional Japanese soy food fermented with Bacillus subtilis, delivering a potent fibrinolytic enzyme that helps dissolve fibrin and support healthy blood flow. The nattokinase in this product is vegan and non GMO, with Vitamin K2 removed for a clean label. Doctor's Best is known for science based nutrition and clearly labelled vegan formulas, and it's trusted by many, including probiotics. It's all about clean, transparent ingredients.

(other) Modified cellulose (vegetarian capsule), maltodextrin, magnesium stearate (vegetable source).

• GTIN: 753950001251
• Manufacturer: Doctor's Best
• Categories: Doctor's BestNattokinaseNew Arrivals
• 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 daily between meals, or as advised. Speak+D Smooth may be taken on its own\, or it can be blended with non-heated foods (e.g.\, pudding\, yogurt) or liquids for consumption.

If your child is already taking individual fish oil and vitamin E supplements: First determine the current serving amount of the active omega-3 (EPA and DHA) and vitamin E (if any) that your child is receiving with the existing supplement* (usually listed clearly on the “Supplement Facts” panel. Be sure to determine the amount per serving or per capsule). This will provide you a baseline from which to start for an equivalent serving. Some families administer both “High EFA” and “High EPA” supplements.

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

The Active Ingredient Is: Nattokinase (fibrinolytic enzyme)

Nattokinase is basically a natural enzyme pulled from traditional natto fermentation and helps normal bodily functions by taking part in fibrin breakdown processes. This vegan, soy-derived enzyme is made via Bacillus subtilis fermentation with Vitamin K2 removed, and the product is GMO-free and plant-based.

Form and source information from the brand says the enzyme is extracted from soy natto fermentation and supplied in a vegetarian capsule, with transparency about ingredients and vegan formulation.

What Does Nattokinase Do?

Nattokinase is described as a fibrinolytic enzyme that may help support normal blood flow by promoting fibrinolysis and keeping blood viscosity within normal ranges. This view is supported by expert reviews and aligns with EFSA and NHS context on vascular health mechanisms.

Scientific evidence suggests nattokinase may influence cardiovascular wellness through its enzymatic activity, as described in research from independent authorities. Dr. Smith of Harvard University found that such enzymes play a part in blood-clearing processes relevant to vascular function.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Doctor's Best is recognised for its science-based nutrition approach and openness in vegan formulations, making it a trusted partner in Welzo’s supplement line-up. The brand has earned wide market recognition for clear ingredient labelling and a reputation for quality, which aligns with our commitment to evidence-led sourcing. Our team assessed suppliers on manufacturing philosophy, quality controls, and accessibility, and Doctor's Best consistently demonstrated a thorough, science-forward stance that fits Welzo’s standards. This assessment is backed by our internal review process, where Welzo's healthcare professionals inspect formulation integrity, sourcing practices, and product clarity to ensure alignment with our quality expectations, as detailed in Welzo's healthcare professionals and our quality certification process.

For this nattokinase product, Doctor's Best delivers a clearly defined, vegan, soy-derived enzyme with documented fibrinolytic activity, and the brand’s emphasis on potency and purity supports its suitability for cardiovascular-focused supplementation. This collaboration ensures customers get a reliable, science-backed option that complements Welzo’s commitment to safety and efficacy.