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Doctor's Best

Doctor's Best Natto-Serra 90 Veggie Caps

Doctor's Best Natto-Serra 90 Veggie Caps

Regular price $49.00 AUD
Regular price Sale price $49.00 AUD
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Taxes included. Shipping calculated at checkout.


  • Science-Based Nutrition™
  • (Nattokinase-Serrapeptase)
  • Helps Support the Circulatory and Immune System
  • Dietary Supplement
  • Vegan
  • Non-GMO

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.

Suggested use

Adult Use: Take 1 capsule daily without food, or as recommended by a health practitioner.

Other ingredients

Serrateric™ (maltodextrin, tricalcium phosphate, calcium stearate, medium chain triglycerides), delayed release capsule (hypromellose, gellan gum, purified water).
Contains Soy.


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. 

Keep out of reach of children. 

Store in a cool dry place.

Supplement Facts

Serving Size: 1 Veggie Capsule

Servings Per Container: 90                                                           



   Amount  per serving

 %Daily Value

Calcium (from tricalcium phosphate and calcium stearate in Serrateric)           

29 mg  2%

Serrapeptase Enzyme (from Serratio sp.)     

 40,000 SPU**   

Nattokinase (from fibrinase enzyme)

 2,000 FU***   

† Daily Value not established.
**SPU-serratiopeptidase activity units
***FU-fibrinolytic activity units 

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Introduce your content

Answer your customers' common questions

Are these masks Australian Made?

Of course not. At this price they come straight from the mainland of China. However who would be better at manufacturing masks than the chinese? These masks have saved many Australians hard earned dollars, they are good quality, and have challenged the belief that inflated mask prices are unavoidable.

Do you sell kids masks?

No I do not. Masks are not the answer to covid. Good hygiene and strong immune systems are essential. Kids have not been largely affected by recent events and the reason for this is unknown. Teach kids to wash their hands, cover their mouths when coughing, and stay home when unwell and they'll be better than most adults at these tasks. Masks dont replace basic hygiene and dont work if used incorrectly.

Is this price for a box of 50?

Absolutely! WEhat you see is what you get. 50 pieces of loop 3 ply disposable masks. Not 51.. not 49.. 50 chances to rebreathe your own air and check for bad breath. If its too overwhelming, try 1 drop of your favorite essential oil and breathe to your hearts content.

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