Boostaro Official Website › Safety & Interactions
Boostaro Safety, Side Effects And Interactions
Three of the seven ingredients in Boostaro interact with blood thinners: vitamin K2, nattokinase and maritime pine bark. A fourth, L-citrulline, works on the same pathway as nitrates. Amounts are not published, so nothing here can be ruled out by arithmetic. Talk to a doctor before use if you take medicine.
This is the page we would want a member of our own family to read before ordering.
The four Boostaro interactions that matter most
| Ingredient | Interacts with | Direction | What to do |
|---|---|---|---|
| Vitamin K2 | Warfarin and vitamin K antagonists | Directly opposes the drug | Do not start without the clinician managing your INR |
| Nattokinase | Anticoagulants, antiplatelets, aspirin therapy | Adds to the effect | Ask the prescriber. Usually stopped before surgery |
| Maritime pine bark | Blood thinners | Mild antiplatelet effect reported | Mention it at the same conversation |
| L-Citrulline | Nitrates, PDE5 inhibitors | Same nitric oxide pathway | Ask the prescriber before combining |
Four rows on a seven-ingredient panel. That is a high proportion, and it is the reason this page exists rather than a paragraph at the foot of another one.
Before any surgery or dental procedure. Tell the team you are taking a product containing nattokinase and vitamin K2, and ask how far in advance to stop. Anything with fibrinolytic activity is normally paused before a procedure.
What Boostaro might do that you would notice
Loose stools
The commonest supplement side effect there is, and magnesium is the usual cause. The supplemental upper limit is 350 mg a day, and this label publishes no figure.
Stomach upset
Large vitamin C doses can do this. Taking the capsule with food usually settles it.
Headache or flushing
Reported occasionally with nitric oxide precursors. If it persists, stop and speak to a clinician.
Bruising more easily
Worth taking seriously on this panel, given three ingredients that affect clotting. Stop and get advice.
Nothing at all
The most common outcome in week one, and it is not a side effect. See the timeline page for what the record reports.
An allergic reaction
Rare, and a reason to stop immediately and seek medical help. Nattokinase is derived from fermented soy.
Adding Boostaro to supplements you already take
This picture, from The supplier, is a better warning than anything we could write. The risk on this panel is not the product on its own. It is the second magnesium supplement, the multivitamin with 1,000 mg of vitamin C in it, and the fish oil that also thins the blood a little.
Two upper limits are worth knowing: supplemental magnesium at 350 mg a day and total vitamin C at 2,000 mg a day for adults, both from the NIH. With no published figures on this label, the only safe approach is to keep the rest of the stack modest and tell a pharmacist what you are taking.
More is not better here. Nothing on this panel is improved by exceeding the serving on the bottle.
What nobody can tell you about Boostaro
- Whether any ingredient reaches a researched dose. Not published, so not knowable from the label.
- The form of the magnesium or the vitamin K2. Oxide and citrate differ in absorption; MK-4 and MK-7 differ in half-life. Neither form is stated.
- The fibrinolytic activity of the nattokinase. The only unit that means anything for an enzyme, and it is absent.
- How it interacts with a medicine not on the list above. A pharmacist with your full medicine list is better placed than any website.
We would rather publish four unknowns than imply a safety profile we cannot support. If the bottle you receive carries amounts, tell us and this page changes.
When to skip Boostaro and book an appointment
Stock photography, and we label it as such: nobody in this picture reviewed this website or endorses this product.
The message is the real part. Book an appointment rather than buying a supplement if the change was sudden, if it came with chest pain or breathlessness, if it followed a new medicine, or if it has lasted more than a few months. A systematic review in European Urology found erectile difficulty frequently precedes a cardiovascular diagnosis by two to five years, which makes it one of the more useful early signals in men's health.
The NIDDK page is a plain, non-commercial place to start reading before that appointment.
The risk that has nothing to do with the Boostaro panel
Everything above concerns ingredients that are declared. The other risk in this category concerns ingredients that are not, and it is the reason to care where a bottle came from rather than only what its label says.
Sexual enhancement products are the single most frequently adulterated supplement category in the United States. The adulterant is usually an undeclared analogue of a prescription drug, which is dangerous precisely because the buyer does not know to avoid nitrates. There is no way to detect that from a label, a photograph or a price.
What a buyer can actually do is short: order from a named retailer with a phone desk and a returns address, keep the lot code, check the seal under the cap before taking anything, and read the FDA notification list before buying anywhere in this category. Those four steps are not a guarantee. They are the whole of the practical protection available, and they are why this website prints a lot number on every page.
What to do if Boostaro disagrees with you
Stop taking it
Set the bottle aside. Do not push through anything unusual to protect a refund window.
Speak to a clinician
Take the bottle or a photograph of the panel. Serious reactions should also be reported to the FDA through MedWatch.
Call the order desk
+1 (888) 851-5931, seven days. The 60-day window applies whether or not you finished the bottle, and the desk takes the return.
Boostaro safety questions
Who should not take Boostaro?
Anyone under 18. Anyone pregnant or nursing, although this is a product sold for adult men. Anyone taking warfarin or another anticoagulant or antiplatelet medicine, because vitamin K2, nattokinase and pine bark extract all interact with that class. Anyone on nitrates. Anyone with a diagnosed condition should ask their own clinician first.
Does it interact with erectile dysfunction medication?
Ask your prescriber. L-citrulline acts on the nitric oxide pathway, which is the same pathway PDE5 inhibitors work on, and nitrates are an absolute contraindication with that class of drug. This is not a question a website can answer for you.
Are there side effects?
The most likely ones on a panel like this are digestive: magnesium above roughly 350 mg from supplements loosens stools, and large vitamin C doses can upset a stomach. Since the amounts are not published, you cannot rule either out in advance. Stop and speak to a clinician if anything unusual happens.
Is Boostaro FDA-approved?
No. The FDA does not approve dietary supplements. The label carries an FDA-registered facility mark, which is a statement about a factory being registered, not about this product being reviewed or approved.
Could there be a hidden drug ingredient in it?
That is a fair question in this category and the honest answer is that no consumer can rule it out from a label alone. The FDA publishes a running notification list of sexual enhancement products found to contain undeclared sildenafil or tadalafil analogues. Buying from a named desk with a phone number, a lot code and a refund address is the practical protection available to a buyer.
Sources cited on this page
- National Institutes of Health, Office of Dietary Supplements. Vitamin K: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminK-Consumer/
- National Institutes of Health, Office of Dietary Supplements. Magnesium: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Magnesium-Consumer/
- National Institutes of Health, Office of Dietary Supplements. Vitamin C: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminC-Consumer/
- Chen H, McGowan EM, Ren N, Lal S, Nassif N, Shad-Kaneez F, Qu X, Lin Y. Nattokinase: A Promising Alternative in Prevention and Treatment of Cardiovascular Diseases. Biomark Insights. 2018;13:1177271918785130. https://pubmed.ncbi.nlm.nih.gov/30013308/
- Kim JY, Gum SN, Paik JK, Lim HH, Kim KC, Ogasawara K, Inoue K, Park S, Jang Y, Lee JH. Effects of nattokinase on blood pressure: a randomized, controlled trial. Hypertens Res. 2008;31(8):1583-8. https://pubmed.ncbi.nlm.nih.gov/18971533/
- Robertson NU, Schoonees A, Brand A, Visser J. Pine bark (Pinus spp.) extract for treating chronic disorders. Cochrane Database Syst Rev. 2020;9(9):CD008294. https://pubmed.ncbi.nlm.nih.gov/32990945/
- Gandaglia G, Briganti A, Jackson G, Kloner RA, Montorsi F, Montorsi P, Vlachopoulos C. A systematic review of the association between erectile dysfunction and cardiovascular disease. Eur Urol. 2014;65(5):968-78. https://pubmed.ncbi.nlm.nih.gov/24011423/
- National Institute of Diabetes and Digestive and Kidney Diseases. Erectile Dysfunction (ED). https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction
- U.S. Food and Drug Administration. Questions and Answers on Dietary Supplements. https://www.fda.gov/food/information-consumers-using-dietary-supplements/questions-and-answers-dietary-supplements
Every page, every journal post, the bottle facts and the ingredients go through review by Dr. Rachel Rubin, MD before they ship. We write these pages from the Boostaro bottle and the distributor’s own paperwork, cite published research for every named ingredient, and print “not published” wherever a figure is not disclosed rather than estimating it. Where the manufacturer’s marketing art claims more than the bottle supports, we print both and say which one we follow. Corrections are made on the page itself and the review date moves forward. Write to [email protected]. Last reviewed September 2026 by Dr. Rachel Rubin, MD.
Buy Boostaro with the interaction list in hand
If your prescriber says no, the order desk refunds it inside 60 days. That is the right order to do this in.
60 capsules a bottle · 60-day money-back window from purchase
Order Boostaro On The Official WebsiteShips from the United States · tracking arrives in the order email · lot BAR-26/AM-7740 · refunds on +1 (888) 851-5931