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Doctor's Best Natto-Serra - 90 vcaps
Natto-Serra by Doctor's Best delivers circulatory support and immune calm through nattokinase and serrapeptase, a vegan, non-GMO enzyme blend crafted for optimal intestinal delivery.
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Natto-Serra by Doctor's Best delivers circulatory support and immune calm through nattokinase and serrapeptase, a vegan, non-GMO enzyme blend crafted for optimal intestinal delivery. Developed by Doctor's Best, a name rooted in enzyme science and quality, it uses Serrateric coating to optimise delivery. The vegan, non-GMO mix supports everyday wellbeing, without allergens that annoy some.
Available Sizes & Variants:
90 capsules — convenient daily dose for ongoing circulatory support
Benefits & Features:
- Supports healthy circulation with natural fibrinolytic action.
- Delivers nattokinase and serrapeptase in a protected, easy to absorb form through Serrateric coating, helping enzymes reach the gut intact and promote smoother blood flow to support circulatory comfort and daily activity.
- Vegan, non-GMO formulation suits plant-based lifestyles while avoiding common allergens and fillers.
- Synergistic enzyme blend supports circulatory flow and immune function, as observed in some studies.
- Doctor's Best backing means strict sourcing and Serrateric coating that protects enzymes until the intestine, helping you feel steadier throughout the day.
Doctor's Best Natto-Serra sits on a solid heritage of enzyme science and practical manufacturing. Serrateric coating protects the enzymes until they reach the intestine, helping delivery feel smoother than older coatings. Natto-Serra blends nattokinase from natto with serrapeptase from Serratia E-15 in a vegan soy based formula that avoids common allergens. This blend has earned a loyal following among health enthusiasts seeking natural circulatory support with a clean ingredient list. Some customers pair it with probiotics, n acetylcysteine, or a vitamin d supplement for broader wellness.
United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.
Welzo is a UK-based health platform. Orders ship from the UK.
Please consult the product packaging for accurate instructions on how to use the product.
| Serving Size | 1 Veggie Capsule |
| Calories | 29 |
| Total Fat | 0g |
| Saturated Fat | 0g |
| Trans Fat | 0g |
| Cholesterol | 0mg |
| Sodium | 0mg |
| Total Carbohydrate | 7g |
| Dietary Fiber | 0g |
| Sugars | 0g |
| Protein | 0g |
| Calcium | 29mg |
The Active Ingredient Is: Nattokinase
Nattokinase is a proteolytic enzyme derived from natto, used to support normal circulatory function through enzymatic activity.
This formulation includes nattokinase in a vegan, non-GMO context with Serrapeptase as a supporting enzyme; the coating technology aids enzyme delivery to the intestines.
What Does Nattokinase Do?
Nattokinase is involved in the breakdown of fibrin, with research suggesting a role in promoting healthy circulation as part of a broader enzymatic blend.
Dr. Sumi of University of Tokyo found that nattokinase acts as a fibrinolytic enzyme that can contribute to normal vascular function, supporting EFSA-aligned functions for proteolytic enzymes.
This product is not intended to diagnose, treat, cure, or prevent any disease.
Why Doctor's Best Natto-Serra is Welzo Selected
We decided on Doctor's Best as our supplier for Natto-Serra because this brand embodies enzyme science and quality at the heart of its approach. Doctor's Best is recognised for developing enzyme-based formulations and uses Serrateric coating to boost intestinal delivery, supporting the product's intended role in circulatory and immune health. The brand prioritises vegan, non-GMO ingredients and provides vegetarian capsules, matching Welzo’s commitment to high-purity, ethically produced supplements.
Our vetting criteria centre on brand credibility, production philosophy, and testing integrity. Doctor's Best shows a genuine specialty in proteolytic enzyme tech, which resonated with our team as a strong fit for this enzyme-based supplement. The formula—nattokinase and serrapeptase with the Serrateric coating—was evaluated for delivery and formulation, ensuring it matches the intended health-support profile. This brand was thoroughly evaluated by our medical team for compliance with the standards we enforce.
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Frequently Asked Questions
Everything you need to know about this product.
No, it helps prevent blood clots and lowers blood pressure. Substantial evidence does not show that it lowers blood pressure in people with hypertension. It is a dietary supplement and is not recommended to treat any illness.
It is safe for most people, but some experience side effects, e.g., gas, bloating, and other digestive issues, because it contains fermented soybeans and is unsuitable for people with soy allergies.
People having allergies to soy and having coagulation disorders, peptic ulcers and ischemic stroke are advised to be careful.
Yes, some people who use soybeans have experienced an increase in their uric acid levels. This is due to the high protein content of soybeans. So, it is advised that they avoid taking them for a long time in case of uric acid and gout.
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