Vitamin K2 50 mcg Ingredients & Drug Interactions
by Vitacost
What is this page for?
First and foremost: checking Vitamin K2 50 mcg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Vitamin K2 50 mcg is a dietary supplement by Vitacost with 1 active ingredient. Its ingredients are commonly taken for supporting normal blood clotting, bone health, heart and vascular health.Based on those ingredients, 2 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Vitamin K2. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Vitamin K2 50 mcg by Vitacost
Ask about any prescription or over-the-counter medication and we check it for interactions with Vitamin K2 50 mcg by Vitacost — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Vitamin K2 50 mcg by Vitacost
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains one active ingredient: Vitamin K2, a form of vitamin K at 50 micrograms per softgel. It's a fat-soluble vitamin your body uses to support normal blood clotting and bone health.
The rest is inactive ingredients — sunflower seed oil, gelatin, glycerin, water, natural caramel color, and titanium dioxide — that make up the softgel capsule itself.
Does it work?
Moderate evidence
Vitamin K2 is effective for treating vitamin K deficiency and conditions tied to low levels of vitamin K-dependent clotting factors. It's also effective at managing warfarin dosing when needed under medical supervision.
For osteoporosis, the evidence suggests it may be helpful, though the data isn't conclusive enough to call it proven.
How safe is it?
Well-documented data
Taken by mouth, vitamin K is generally well tolerated in healthy people at typical food and supplement doses. The most common side effects are mild gastrointestinal: diarrhea, nausea, and stomach upset.
The safety notes advise checking with your doctor before adding a supplement, even though normal dietary amounts are fine. Vitamin K2 is considered likely safe in pregnancy and while breastfeeding.
Meds to double-check
Major interaction found
Before taking this product, check with your pharmacist if you're on any blood thinners in the warfarin family — this is a Major-severity interaction that can reduce their effectiveness and put you at risk. No other medication interactions are documented in our data for the ingredients we could check.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.
Vitamin K2 may be worth considering if you need it for a clotting factor deficiency or want to explore its bone health potential — but it's a must-check if you're on warfarin or a similar blood thinner. Talk to your pharmacist or doctor before starting, especially about any blood-thinning medications.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jan 25, 2017.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Vitamin K2 50 mcg, straight from the product label.
| Brand | Vitacost |
|---|---|
| Barcode (UPC) | 844197019397 |
| Net contents | 30 Softgel(s) |
| Market status | On market |
| Date entered into DSLD | Jan 25, 2017 |
| DSLD ID | 70231 |
| Product type | Vitamin |
| Supplement form | Softgel Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Vitamin K2 50 mcg by Vitacost, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin K2 | 50 mcg | 63% |
Other ingredients: Sunflower seed Oil, Gelatin, Glycerin, Water, natural Caramel color, Titanium Dioxide
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Directions As a dietary supplement for adults 18 years of age and over, take 1 softgel daily or as directed by a healthcare professional.
Storage
Keep dry and at room temperature (59(0)-75(0)F [15(0)-24(0)C]).
Formulation
Free of Milk, eggs, peanuts, crustacean shellfish, fish, gluten.
FDA Disclaimer Statement
Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.
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.
Precautions
Warnings Pregnant or lactating women, diabetics, hypoglycemics and people with known medical conditions and/or taking drugs should consult with a licensed physician and/or pharmacist prior to taking dietary supplements.
Warnings Pregnant or lactating women, diabetics, hypoglycemics and people with known medical conditions and/or taking drugs should consult with a licensed physician and/or pharmacist prior to taking dietary supplements. Individuals taking anticoagulants (e.g., warfarin, heparin) or aspirin and other salicylates should consult with their physician before taking supplemtents containing vitamin K.
Keep out of reach of children.
Contains: Soy.
Formula
Vitacost Vitamin K2 - MenaQ7 description Natural vitamin K2 supplement for bone health support. Featuring MenaQ7 - a premium, clinically studied form of vitamin K2.
With MenaQ7 - a clinically studied form of vitamin K2
Features clinically studied MenaQ7 natural vitamin K2
Contains: Soy.
General Statements
Natural bone health support
Naturally derived from Japanese natto (fermented soybeans) Superior to K2 supplements made with the synthetic (MK-4) form Supplies 50 mcg per serving
What is Vitamin K? Vitamin K is a group of compounds known as quinones, needed by the body to make certain types of proteins required for normal blood coagulation and bone health. Vitamin K1 (phylloquinone) is found primarily in leafy green vegetables such as spinach and kale, while vitamin K2 (menaquinone) is produced by bacteria in both human and animal intestines.
How does Vitamin K support health? Vitamin K's primary function in the body is to aid in the production of Gla (gamma carboxyglutamic acid) proteins, which play a part in coagulation and anti-coagulation of blood. Vitamin K is also necessary for osteoblasts (bone-forming cells) to activate osteocalcin, a protein that binds calcium to bones. Therefore, adequate amounts of vitamin K make certain calcium is properly delivered to bones and arterial health is maintained.
Why choose Vitacost Vitamin K?
Derived from the Japanese food natto, not synthetically made. 50 mcg per single-softgel serving 30 serving per bottle Incredible quality at an everyday low, affordable price
About Vitacost Vitacost nutritional products are manufactured to high standards of quality, efficacy and saftey. Each Vitacost product meets or exceeds the standards and requirements set forth in the FDA's code or Federal Regulation (21 CFR, 111) Current Good Manufacturing Practices (cGMP).
Brand IP Statement(s)
With MenaQ7 - a clinically studied form of vitamin K2
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Vitamin K2 50 mcg by Vitacost label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Vitamin K2 50 mcg by Vitacost
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Softgel(s) Dosage formSoftgel Capsule Servings per container30 Amounts shown are per serving.
Vitamin K2
Interacts with2 drugs
Vitamin K is an essential nutrient your body needs for normal blood clotting and to support healthy bones. Most people get enough from food, but suppl...
Vitamin K2 monograph & interactionsOther (inactive) ingredients: Sunflower seed Oil, Gelatin, Glycerin, Water, Natural Caramel color, Titanium Dioxide. These complete the product’s ingredient list but are not active constituents.
Vitamin K2 50 mcg by Vitacost Drug Interactions
HelloPharmacist Interaction Report
Vitacost Vitamin K2 50 mcg has a significant interaction with blood thinners, specifically warfarin (Coumadin) and related medications.
Vitamin K can directly reverse the effect of warfarin, reducing how well it prevents blood clots — this is a Major-severity interaction. If you're taking warfarin or other blood thinners in that same family, even this supplement dose can interfere with your treatment.
Read the full breakdown — every affected drug type, severity by severity
Additionally, if you're not on a blood thinner, no other interactions are documented in our data for the ingredients we could check. That said, the absence of documented interactions isn't a guarantee none exist.
Before you start this supplement, run your exact medications through the checker on this page — especially if you're on any blood thinner.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Vitamin K2 50 mcg?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Vitamin K2 50 mcg interact with 2 drugs. Click any drug to see the details.
1 of the 1 ingredient in Vitamin K2 50 mcg interact with drugs. Each result below shows which ingredient is responsible. Vitamin K2
WarfarinWarfarin
How Warfarin interacts with Vitamin K2 50 mcg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin K2Warfarin (coumadin) Major
Interaction Summary
Vitamin K can antagonize and reverse the therapeutic effects of warfarin.
Read the full Vitamin K2 + Warfarin interactionWarfarin SodiumCoumadin, Panwarfin, Sofarin
How Warfarin Sodium interacts with Vitamin K2 50 mcg — through 1 ingredient. Tap an ingredient for the detail:
Vitamin K2Warfarin (coumadin) Major
Interaction Summary
Vitamin K can antagonize and reverse the therapeutic effects of warfarin.
Read the full Vitamin K2 + Warfarin Sodium interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Vitamin K2 50 mcg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Vitamin K2
Warfarin (Coumadin)
Vitamin K can antagonize and reverse the therapeutic effects of warfarin.
Vitamin K antagonizes the effects of warfarin. Excessive vitamin K intake, either from supplements or from changes in the diet, can reduce the anticoagulant effect of warfarin.
Brand information
Manufacturer and brand details for Vitamin K2 50 mcg, from the product label.
Vitamin K2 50 mcg by Vitacost: Common Questions
Does Vitamin K2 50 mcg by Vitacost interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What is Vitamin K2, and what does it do in my body?
Can I take this if I'm on warfarin?
What are the side effects?
Is this safe to take while I'm pregnant or breastfeeding?
What conditions does Vitamin K2 treat?
Does this product have fillers?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Vitamin K2 50 mcg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Vitamin K2 50 mcg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Vitamin K2 50 mcg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 11 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Vitamin K 11 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Crowther MA, Ageno W, Garcia D, et al. Oral vitamin K versus placebo to correct excessive anticoagulation in patients receiving warfarin: a randomized trial. Ann Intern Med. 2009;150(5):293-300. PubMed
- Dietary vitamin K guidance: an effective strategy for stable control of oral anticoagulation? Nutr Rev. 2010;68(3):178-81. PubMed
- Kim JS, Nafziger AN, Gaedigk A, et al. Effects of oral vitamin K on S- and R-warfarin pharmacokinetics and pharmacodynamics: enhanced safety of warfarin as a CYP2C9 probe. J Clin Pharmacol. 2001 Jul;41(7):715-22. PubMed
- Riegert-Johnson, D. L. and Volcheck, G. W. The incidence of anaphylaxis following intravenous phytonadione (vitamin K1): a 5-year retrospective review. Ann.Allergy Asthma Immunol. 2002;89(4):400-406. PubMed
- Dezee, K. J., Shimeall, W. T., Douglas, K. M., Shumway, N. M., and O'malley, P. G. Treatment of excessive anticoagulation with phytonadione (vitamin K): a meta-analysis. Arch.Intern.Med. 2-27-2006;166(4):391-397. DOI
- Dentali, F., Ageno, W., and Crowther, M. Treatment of coumarin-associated coagulopathy: a systematic review and proposed treatment algorithms. J.Thromb.Haemost. 2006;4(9):1853-1863. PubMed
- Caluwé R, Vandecasteele S, Van Vlem B, Vermeer C, De Vriese AS. Vitamin K2 supplementation in haemodialysis patients: a randomized dose-finding study. Nephrol Dial Transplant. 2014;29(7):1385-90.
- Huang ZB, Wan SL, Lu YJ, Ning L, Liu C, Fan SW. Does vitamin K2 play a role in the prevention and treatment of osteoporosis for postmenopausal women: a meta-analysis of randomized controlled trials. Osteoporos Int. 2015;26(3):1175-86. PubMed
- Hunnali CR, Devi U, Kitchanan S, Sethuraman G. Three Different Regimens for Vitamin K Birth Prophylaxis in Infants Born Preterm: A Randomized Clinical Trial. J Pediatr 2023;255:98-104. PubMed
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC