No medical studies have proven any side effects to nattokinase, but that’s not to say there are no dangers when taking it if you are already prescribed anticoagulants, if you have blood clotting disorder, or if you are a pregnant woman.
If you class yourself in one of those categories, you need to read on!
However, this is wonderful news if you want to use this incredibly powerful fibrinolytic enzyme to keep your blood pressure normal.
And if you have blood circulation problems like I have (I wear a compression stocking on both of my legs to send the blood back around my body), it’s a real blessing, allowing me to live with less discomfort and pain.
Nattokinase Replaced My Coumadin Drugs
At one time I was prescribed warfarin, and I am really glad I was able to stop taking this dangerous medication, because I discovered nattokinase.
Although I wear compression stockings to keep my blood flowing, my blood vessels still need assistance in helping my blood flow freely. This is one of the reasons I take nattokinase, twice daily.
If you are currently prescribed long term warfarin, you should know that you are at a higher risk of a brain hemorrhage (please do further research or contact your doctor right away, if this is new information to you).
You may also be surprised to learn that warfarin, although a stroke preventing drug, may actually cause a different type of stroke, called a hemorrhagic stroke.
The great news is though, that warfarin is being phased out in people who are at high risk of arterial fibrillation (symptoms range from fainting, dizziness, palpitations and congestive heart failure) and is being replaced (or advised as an alternative) by newer, safer drugs.
Although approved by the FDA, my reservation with this is really, how safe are these drugs in the long term. Remember, warfarin was also safe to use when it was first released.
Time will tell, and this is certainly food for thought.
But it is just another reason why the natto enzyme could be more readily used or even prescribed to keep your blood thin (for certain patients anyway). And certainly used as protection against coronary heart disease.
When Should You Not Take Nattokinase?
Nattokinase is a strong anti-clotting protein that is perfectly safe to use, if you are a healthy person with no blood disorders.
But you should also avoid taking it, if you are currently taking any kind of blood-thinning medication like warfarin, aspirin, heparin and ibuprofen (some of these are normally used for pain relief, but bare them in mind if you consider taking nattokinase).
Your body does not need two agents acting in your cardiovascular system reducing the bloods ability to clot, as this could stop your bodies natural process of repairing itself.
Using a combination of both of these can cause you serious bruising from even the slightest touch of your skin, just to give you an idea of how powerful nattokinase can be.
However, your body does need an ability to coagulate (say, if you cut yourself) and if your blood is unable to clot then you could lose too much of it.
Also, if you encounter a tiny hole in a blood vessel, your blood must be allowed to clot to repair these holes.
Pregnant Women Should Not Take Nattokinase
If you are pregnant, nattokinase may be dangerous to you and your fetus.
There is not enough known about the effects, or possible side effects of nattokinase, in pregnant woman.
So if you are pregnant, you must consult a medical professional before you take nattokinase, and you should certainly refrain from ingesting raw natto food (the Japanese food where the enzyme originates).
Conflictingly, if you are a woman with fibroids, taking nattokinase can help you conceive for a baby. Because the enzyme will break down those fibrin and collagen growths, safely disposing of them from the body.
Do Not Take Nattokinase if You Are Injured
Also, if you have any kind of injury or trauma, then the best advice is not to take this enzyme. We know that nattokinase helps to thin the blood.
So if you have an injury that is bleeding externally or internally like a stomach ulcer, then you should exclude it from your supplement shelf.
The same also goes for any kind of surgery, even dentistry type of surgery to. Any time your body is at risk of losing too much blood, you should avoid taking nattokinase.
If You Suffer Low Blood Pressure
Nattokinase also lowers blood pressure, so if you are anemic or generally suffer from low blood pressure, then then the best advice is not to take it.
It might further reduce your blood pressure, causing you nausea, dizziness and the possibility of you passing out.
What Could It Do to You if You Did Take It?
Have read of this article, if you do want to take it and want to know the correct nattokinase dosage.
And to conclude, what are the potential side effects of taking nattokinase, if you are at risk of injury or take anti-coagulants?
- Blood unable to clot (if used with prescription medication)
- Bruising and bleeding
- Severely reduce blood pressure
- Nausea and dizziness
Again, if you are pregnant or are unsure if you should take nattokinase, always consult your doctor first.
Common Sense Prevail’s
Nattokinase (a purified serine protease) is the strongest plant based fibrinolytic enzyme which has many health benefits for the average person, who want to help their blood flow more freely, and regulate their blood pressure.
But you must be cautious if you have blood disorders, are pregnant, or are injured, because it can seriously affect your blood system, particularly if it is used with some types of medications, as discussed above.
1 – https://patient.info/warfarin-anticoagulant
2 – https://healthline.com/hemorrhagic-stroke
3 – https://nhs.uk/coronary-heart-disease/
4 – https://en.wikipedia.org/Peptic_ulcer_disease
5 – https://medlineplus.gov/druginfo/a682826.html