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Description
Doctor's Best Natto-serra - 90 VcapsRead more about this product Doctor's Best Natto Serra is a combination of two natural enzymes serrapeptase and nattokinase, and supports healthy immune response and supports healthy circulation. Nattokinase, a fibrinolytic enzyme, breaks down blood clotting fibrin while Serrapeptase (serratiopeptidase) is a protein digesting enzyme isolated from the friendly bacterium Serratia E 15 Doctor's Best uses serrapeptase made with Serrateric, a superior
Read more about this product
Doctor's Best Natto-Serra is a combination of two natural enzymes serrapeptase and nattokinase, and supports healthy immune response and supports healthy circulation.Nattokinase, a fibrinolytic enzyme, breaks down blood clotting fibrin while Serrapeptase (serratiopeptidase) is a protein-digesting enzyme isolated from the friendly bacterium Serratia E-15
Doctor's Best uses serrapeptase made with Serrateric, a superior alternative to enteric coating that protects the enzyme until it reaches the intestines for optimal absorption.
Nattokinase is derived from Natto , a fermented soy food popular in Japan for centuries.
Gluten Free, Non-GMO, Vegetarian, Vegan
What is Doctor's Best Natto-Serra?
Doctor's Best Natto-Serra supports healthy immune response and supports healthy circulation. It is a combination of two natural proteolytic enzymes, serrapeptase and nattokinase. Serrapeptase (serratiopeptidase) is a protein-digesting enzyme isolated from bacteria isolated from the intestine of silk worms (Serratia E-15). The serrapeptase is formulated with Serrateric, a superior alternative to enteric coating that protects the enzyme until it reaches the intestines for optimal absorption. Nattokinase is derived from Natto , a fermented soy food popular in Japan for centuries.
How does it work?
Natto kinase is an enzyme that is found in traditional Japanese soy cheese that is also known as natto. Natto has been shown to exhibit a fibrin lytic effect in the blood stream. It has the capability to break down blood clots. Nattokinase was discovered I 1980 by a doctor from Miyazaki Medical College in Japan. Since its discovery, the cardiovascular effects of Nattokinase have been studied in many countries. Serrapeptase has other applications. Serrapeptase is an immunologically active enzyme. It can bind itself to the alpha 2 macroglobulin in our plasma where it is shielded from the immune system while retaining its enzymatic activity, and in this way it is transferred to the sites where it is needed in the body. It is this same type of specific action that allows silkworms to eat its own protective cocoon, digest it without any side effects.
What is In
Doctor's Best
Natto-Serra - 90 vcaps
Food supplement in capsule form, containing Calcium, Nattokinase and Serrapeptase enzyme
Nutrition Facts
Serving Size: 1 Veggie Capsule
Servings Per Container: 90
| Amount Per Serving |
%RI* | |
|---|---|---|
| Calcium (from tri calcium phosphate andcalcium stearate in Serrateric) | 27 mg | 2% |
| Serrapeptase enzyme (fromSerratio sp.) | 40000 SPU | |
| Nattokinase (from fibrinase enzyme) | 2000 FU |
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Ingredients: Calcium (from tri calcium phosphate andcalcium stearate in Serrateric), Serrapeptase enzyme (fromSerratio sp.), Nattokinase (from fibrinase enzyme)
Other ingredients: Serrateric (maltodextrin, trica lcium phosphate, calcium stearate, microcrystalline cellulose, medium chain triglycerides), delayed release capsule (modified cellulose, gellan gum, purifed water. Contains Soy.
Recommended use: Take 1 capsule daily without food, or as recommended by a nutritionally-informed physician.
Warnings: Not recommended for individuals who are pregnant, nursing, allergic to soy, or have poor digestion. Consult a physician before use if taking blood thinners. Stop taking if you experience nausea, vomiting or stomach upset.Non-GMO / Gluten Free / VeganKEEP OUT OF REACH OF CHILDRENStore in a cool dry place.
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Product Reviews
★★★★★ 5
Reliable and lasts forever Best budget option
Style: Combo, Color: Black, Size: 1 Pack, Style: Combo, Color: Black, Size: 1 Pack
I had this same model a long time ago and it lasted forever, I only had to get a new one because I lost the USB receiver, so I know for a fact they are very durable. For the price, you can't beat the compatibility you just plug it in and it works instantly. The appearance is very simple, it's not the most attractive or pretty keyboard since it has no lighting or fancy features, but it's built to last. The noise level is fine for a membrane keyboard, not too loud. In terms of ergonomics, it feels comfortable enough for daily work and the color is just the standard black that goes with everything. The best part is the battery life, it lasts months without needing a change.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Exceptional
Size: 22, Size: 22
Great quality and price. Monitors are exceptional. Would buy again without question. Screens are quite resilient, great picture. I bought three and use them in a multi Monitor setup for my work laptop, I needed something to view wireing diagrams and scan tool information qt the same time. If your a Service Technician looking for a multi Monitor set up would strongly recommend this Monitor.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Great product and great price
Size: 22
I think the negative thing I can highlight is the pixel dentist isn’t that high so it doesn’t look as crisp but this is a great budget option when you are in a hurry (like me) or simply need a screen that does its job. I use it for home office and it’s more than enough.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Great value & clear & bright color.
Size: 24
The monitor has been working great. The color & graphics are sharp. It is also responsive to the computer. I got it on sale so it was a great price & addition to my computer setup.
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Reviewed in the United States on May 1, 2026
★★★★★ 4
Works for what u pay
Size: 22
Only reason it’s not a 5star is bc I’m picky it doesn’t have any speakers first of all so don’t go thinking there’s sound refresh rate is what you would think for this price it runs games super well and has decent quality easy to use and pretty bright as well it’s not a curved monitor so the viewing is pretty normal
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Reviewed in the United States on November 29, 2025