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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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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Love it
Color: A-mz721- Multicolor, Size: Medium
Beautiful design - looks as good, if not better - than advertised, and the fit was spot-on, too. Great top at a great price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
★★★★★ 4
Pretty and comfy
Color: A-mz721- Multicolor, Size: XX-Large
Great fit, great colors...only wish ir was a bit more cotton but i'll live with it the tops so nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
The perfect throw-on athletic dress (with built-in shorts!)
Size: Small, Color: Navy Blue
I’ve been loving this athletic dress—it’s one of those pieces that’s both functional and cute, which is hard to find. The fabric is lightweight, breathable, and slightly stretchy, so it’s comfortable whether you’re running errands, going for a walk, or just chasing kids around all day.
The built-in shorts are a huge plus. They stay in place well and make it feel more secure than a regular dress, especially on busy days. I also appreciate the pockets—they’re actually usable and don’t feel bulky.
The fit is relaxed and flowy, which I personally like because it’s easy and flattering without clinging. The straps are adjustable, so you can customize the fit a bit depending on your height or preference.
I’d say it runs true to size for a looser fit. If you want it more fitted, you could size down, but I like the casual, sporty look as is.
Overall, this is a great everyday summer staple—super easy to style with sneakers or sandals, and perfect for travel or on-the-go days. I’ll definitely be getting more colors!
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Perfect for summer days.
Size: Medium, Color: Deep Gray, Size: Medium, Color: Deep Gray
I absolutely love this little athletic summer dress. I typically wear a size ten and ordered this in a medium and it's a perfect fit. I have the straps short so way it doesn't look baggy. It is super soft and comfortable. It is breathable and a perfect cut and length for me so so I plan on wearing it all during hot summer days. This is very versatile and easy to style by layering different things underneath it. I have a gray and leopard sports bra that is a really close shade of gray so it almost looks like it's one piece. I plan to order the teal as I have a swimsuit top that will match that color spot on. It seems like it is good quality and should hold up well to normal usage. I like that it has really big pockets , but I likely will not use them often lol. I just like the fact that if I need to have pockets they are there.
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Reviewed in the United States on April 15, 2026
★★★★★ 4
Size down! But overall comfortable and cute and good quality
Size: Small, Color: Light Yellow
Overall it’s cute and comfortable, but my advice is to SIZE DOWN!!! I wish I would have, but I’ve already washed it so it’s too late. The straps are adjustable, but even so, I’ve had to tighten them as far as they’ll go. For reference, I am 5’1” and 125#, rectangle shaped/boxy body with a very small chest and I got a Small. The top gapes open on me and the dress is longer than I prefer for this style. Material/fabric is nice and good quality and it’s a perfect one-piece easy outfit for warm days. I like the yellow color too. It is tricky to find the right bra to wear with it, though. Got lots of compliments on it the first time I wore it.
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Reviewed in the United States on April 22, 2026
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