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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
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Description
DOCTORS BEST: Natto Serra, 90 vcDoctors Best Natto Serra (Nattokinase Serrapeptase) is a combination of two natural enzymes that have been used as dietary supplements for decades. Serrapeptase (serratio peptidase) is a protein digesting enzyme isolated from the friendly bacterium Serratia E 15 discovered in the Japanese silkworm. Nattokinase also digests protein and is derived from natto, a fermented soy food popular in Japan for centuries. This nattokinase is free of vitamin K. The
Doctor’s Best Natto-Serra (Nattokinase-Serrapeptase) is a combination of two natural enzymes that have been used as dietary supplements for decades. Serrapeptase (serratio-peptidase) is a protein-digesting enzyme isolated from the friendly bacterium Serratia E-15 discovered in the Japanese silkworm. Nattokinase also digests protein and is derived from “natto”, a fermented soy food popular in Japan for centuries. This nattokinase is free of vitamin K. The serrapeptase is formulated with Serrateric™, a superior alternative to enteric coating that protects the enzyme until it reaches the intestine for optimal absorption.GRP:GRNSHP_3
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 4
Worth buying again.
Size: 2.0L
Works great. Right fit. Great value
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Great quality
Size: 2.0L
Perfect fit! Will definitely purchase it again
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Reviewed in the United States on December 12, 2025
★★★★★ 5
Works great on my 2018 Honda Civic EX
Size: 2.0L, Size: 2.0L
Been buying these for years. They are relatively cheap and easy to replace, so much better than getting ripped off at the dealer lmao.
Compatibility and Installation - 5/5
Filtration Efficiency and Performance - 5/5
Durability and Value for Money - 4/5 - these are made to be replaced, so can't really do much about that!
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Reviewed in the United States on May 17, 2024
★★★★★ 5
Perfect
Size: 2.0L
I bought this and was able to change this myself. It was simple. I got this for my 2016 Honda Civic, I don't think I ever replaced the filter in my car in the 5 years that I had it. It had a distinct smell in my car, and once I popped this bad boy in, within a day or two the smell was gone. It did make a sound for a while like I did not do it correctly, but I did, after about a week the sound went away, so everything's good. I will buy this again when the time comes
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Reviewed in the United States on July 16, 2024
★★★★★ 5
fits well
Size: (Pack of 1)
fit perfectly, easy install, saved a buck and time not going to the mechanics.
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Reviewed in the United States on April 19, 2026
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