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Doctor's Best Natto-Serra 90vcaps

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Original price $85.90
Original price $85.90 - Original price $85.90
Original price $85.90
Current price $75.90
$75.90 - $75.90
Current price $75.90

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.

  • Helps support the circulatory system.
  • Helps support the immune system.


Adult Use: Take 1 capsule daily without food, or as recommended by a nutritionally-informed physician.


Per veggie capsule:

Calcium (from tricalcium phosphate and calcium stearate in Serrateric™) 27mg
Serrapeptase Enzyme (from Serratio sp.) 40,000 SPU
Nattokinase (from fibrinase enzyme) 2,000 FU

Other ingredients: Serrateric™ (maltodextrin, tricalcium phosphate, calcium stearate, microcrystalline cellulose, medium chain triglycerides), delayed release capsule (modified cellulose, gellan gum, purified water).

Contains soy.

GMO Free / Gluten Free / Vegan


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.

In stock