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(39 customer reviews)


Premium Systemic Enzyme Formula | Circulatory and Respiratory Support

  • Heart and Circulatory Health*
  • Respiratory Health*
  • Fibrin Metabolism*
  • Normal Blood Viscosity*
  • Healthy Blood Pressure*
  • Healthy Response to Inflammation*



Serracor-NK is a carefully formulated, comprehensive systemic enzyme blend designed to support maximum circulatory, respiratory and fibrotic health. Serracor-NK contains the dual-action formula SEBkinase®, a combination of two potent fibrinolytic enzymes which have powerful synergistic effects.  A carefully selected palette of additional enzymes, herbs and minerals enhance SEBkinase to create a highly effective new formula.

Why Take Fibrinolytic Enzymes?

Fibrin is important. Your body naturally produces fibrin in response to injury or trauma.  Imagine you scrape your knee – your body immediately produces a clot and a thread-like protein called fibrin forms a structure in that clot to hold it in place.  This acts as a natural bandage as the body heals.  Like that scab on your knee, your body uses fibrin to repair internal injuries as well.

But too much fibrin can do more harm than good. It can accelerate scarring, leading to chronic inflammation, pain, and unsightly blemishes.  More seriously, excess fibrin can increase clot formation and impede normal blood flow, which can lead to more serious fibrotic conditions or cardiovascular events.

Maintaining healthy fibrin metabolism is essential.  Serracor-NK supports normal fibrin levels, blood viscosity, overall blood circulation and a healthy inflammation response.*

How Enteric Coating Makes Serracor-NK Uniquely Effective

Our enteric coated serrapeptase and nattokinase makes Serracor-NK unique. If these enzymes are not enteric coated, the acidic environment of the stomach can destroy their potency. Other companies do not have enteric coated serrapeptase. They try and make up for it by selling higher and higher potencies, which ultimately still do not work.  Our cutting-edge enteric coating maximizes serrapeptase and nattokinase potency through the stomach and delivers them into the small intestine, where they are most needed.*

What’s In Serracor-NK?

  • Peptizyme SP® EN (the enteric coated serrapeptase in SEBkinase): known for its beneficial immune cell response. It was first found in silkworms, which used serrapeptase to dissolve their tough fibrous cocoons.
  • Enteric coated nattokinase (the nattokinase in SEBkinase): the active ingredient in an old Japanese folk remedy for cardiovascular support.
  • Bromelain and Papain, known for their immune support properties.
  • Lipase to break down fats into essential fatty acids needed for healthy circulation.
  • Rutin for antioxidant support.
  • Amla a strong source of Vitamin C.
  • Coenzyme Q10 as a cofactor in metabolism.
  • Magnesium to boost SEBkinase performance and support cardiovascular and nerve health.*

A Safe and Natural Regimen

We believe in safety first!  Other companies merely buy and repackage someone else’s product.  But, as a true manufacturer, we control safety from the beginning.

We can certify that Serracor-NK is free of pesticides, chemicals, preservatives, animal derivatives, egg, milk, soy, wheat, peanuts, tree nuts, fish and shellfish. All its enzyme ingredients are kosher-certified, and suitable for vegetarians and vegans.  Serracor-NK is manufactured in the USA and follows cGMP guidelines.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Results may vary.  Copyright © 2021 Biomedic Labs.

All rights reserved. Terms & Conditions

Supplement Facts


Directions: Take 1 to 2 capsules three times a day. In three days, if desired benefit is not achieved, increase to 2 to 3 capsules three times a day. Take capsules 30 to 60 minutes before or 2 hours after a meal with 8 oz. of water. Dosage can be increased or reduced as needed to achieve desired benefits.

Complementing your Serracor-NK with additional serrapeptase can increase fibrinolytic activity, as well as increase positive effects on blood pressure and inflammation, and reduce mucus viscosity in the respiratory system.* Serra RX80 contains 80,000 units of professional-strength serrapeptase per capsule.

Store in cool, dry place with the lid tightly closed. Avoid excessive heat. Keep out of the reach of children. Caution: If you are taking anticoagulants, like warfarin type drugs, do not take this without consulting your physician. If you are pregnant, nursing, taking any medication or under medical supervision, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Not intended for use by persons under the age of 18.

This Product does not contain soy.

39 reviews for Serracor-NK®

  1. Wonderful products!


    I have been taking Serracor-NK & Serra RX 80 now since May 23, 2014. I have had years of pain throughout my body since a hit on the head with a steel bar at the gym.

    Nothing and I mean nothing has helped me, massage, chiropractic, cranial sacral, etc. You name it, I have tried everything and at a tremendous expense as you know insurance does not pay for these type of therapies.

    The above two products have helped me so much with the pain throughout my body and my lungs have become more clear.

    I would definitely tell anyone with pain to try it and be faithful in taking the high doses for 2-3 months. I plan to continue another month and then go on to the maintenance dosage..

  2. Tendonitis

    Pat Micallef

    I am writing in regards to your products, Serracor-NK and Serra RX 80. I have been taking both products faithfully for about two months now and would like to tell you the changes I have noticed.

    I worked at Ford Motor Company for 31 years and developed a bad case of Tendonitis in my right arm. Ford send me for therapy on many occasions with no relief. I have been retired now for 10 years with the tendonitis flaring up throughout those years.

    This past winter, I noticed it getting worse plus moving to my wrist and shoulder. I felt I was eventually going to lose use of my arm. The pain and movement of my arm was terrible.

    On June 1, 2014, I started taking these two products and hoped for the best. I want you to know that within the last two weeks, I have noticed that the pain is gone and I am getting the mobility back in my arm. I couldn’t believe this has happened after all the years in pain.
    Another bonus to go with this is the general well-being.

    Thank you for these wonderful products.



    I purchased SERRA RX80 & SERRACOR for circulation problems. After taking these for 2 weeks, my migraine headaches started to become less frequent and less severe. After 2 months, I was down to 1 headache/month. I tried twice to stop taking product due to expense, but the headaches were back within 2 weeks of stopping. I Have been on it over a year and haven’t had a headache in months. I took 6 of each capsule for 2months, then leveled off at 3 each/day. This stuff fixed what two medical doctors couldn’t help.

  4. Serrakor - NK

    John Moros

    It’s almost a year since I first started taking Serracor-NK.
    The reason was an x-ray indicating scars on my lags.
    The GP said are due to Pulmonary Fibrosis.
    I was feeling tired most of the time, but being over 70 I would have thought is normal and not so much attributed to my fibrosis.
    To day my fibrosis is not progressing and I don’t feel tired as much. I am taking only Diabetic medication for the past 10 years and Serracor-NK for the last year or so.
    I feel that I need to make a comment know about this.
    My family advises me not to stop taking it as my improved situation is more obvious to them and others.
    I have already provide the product details to others.
    I feel better overall and my fibrosis is not progressing.

  5. Amazing Results!

    Sabrina S

    I have had amazing results combining dietary changes and serracor/serrarx and dimpro rx. I have seen a 5 inch reduction in very large uterine fibroids. These products are amazing for both fibroids and inflammation.

  6. Good Results


    I am experiencing some good results with this product. My periods have gotten lighter. Because I have fibroids, and have only been on this product for a few weeks, I am expecting I will see and feel some actual shrinkage of my fibroids.

  7. Reduce Fibrin levels in muscles & Vascular System

    Ken Sharpe

    I have been taking Serracor-NK for several years initially for
    relief of muscle knots causing trigger points. Since taking this product this issue has resolved. Recently I had a cardiac scan to check my vascular system. The results indicated I had one very small area of minimal calcium deposit. I think that this could be the result of Serracor-NK keeping my vascular system free of circulating fibrin. In many cases we can not know the definitive reason for what is happening in our bodies & it is something a matter of trust. Anyway while I continue to experience these results I believe that Serracor-NK is a good investment in my health. Ken S

  8. Scar reduction and joint stiffness relief


    I’ve had a few minor surgeries procedures over the years and I have to tendency to keloid. Serracor has eliminated all the old scar tissue and all remains are flat lines with no bulkiness below. I recently had another procedure and it has helped reduce inflammation, swelling and pain. I’m not working towards scar reduction.

    Also, years ago I experienced adverse side effect to a prescribed drug combination that left me with steroid induced arthritis. Between the Serracor (which was called the original Neprinol formula) and MSM the problem was resolved. Occasionally if I miss a few days of my dosage my fingers begin to ache but an hour after I take my dosage and I’m back to normal.

  9. Wonderful

    George Valerio

    Dear sirs, Several years ago I used this product for my diagnosis was earlier pulmonary fibrosis in 2002. about 2008 or 2009 scarring in my lungs had gotten so bad it was difficult to breath. In September 2007 I had a radical prostectamy because of prostate cancer and had just began to control my incontinence when I took both Serracor pills which not only worked for my lungs but actually caused leakage for it must have also went after the scar tissue in my urethra, this is not a complaint. I now have control once again of incontinence and breathing although not perfect good enough I no longer take advair discus for my lungs. Your Serracor works!!! Thank you,

  10. Very Good

    T. Zick

    Product is used by my 89 year old mother with arthritis. She no longer is on any prescription medication. Wit Serracor-NK and other herbal products she is able to move about the house and even enjoys gardening.

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