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Dietary supplement

MK-7 90 mcg Ingredients & Drug Interactions

by Jarrow Formulas

MK-7 90 mcg label
See full label image
Softgel Capsule Category: Vitamin
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking MK-7 90 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

The interaction bottom line Most serious interaction: Major

MK-7 90 mcg is a dietary supplement by Jarrow Formulas 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.

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Check Your Meds Against MK-7 90 mcg by Jarrow Formulas

Ask about any prescription or over-the-counter medication and we check it for interactions with MK-7 90 mcg by Jarrow Formulas — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of MK-7 90 mcg by Jarrow Formulas

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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 20, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This single-ingredient softgel contains 90 mcg of vitamin K2 (MK-7), a form of vitamin K that your body uses to activate proteins involved in blood clotting and bone metabolism. The softgel itself is made from medium-chain triglyceride, bovine gelatin, glycerin, water, caramel, and olive oil.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: bone health and cardiovascular support.
  • We looked for evidence on: Cardiovascular disease (CVD), Hemorrhagic disease, Hypoprothrombinemia, Intraventricular hemorrhage, Kidney transplant, Osteoporosis — and 4 related terms.
  • The strongest evidence on file: Vitamin K is rated "Effective" for Hemorrhagic disease (Natural Medicines).
  • Also on file: Vitamin K is rated "Effective" for Hypoprothrombinemia, Warfarin anticoagulation, Vitamin K-dependent clotting factors deficiency (VKCFD).
  • Also on file: Vitamin K is rated "Possibly Effective" for Osteoporosis.

Vitamin K2 is effective for treating vitamin K deficiency conditions — including low blood-clotting factors (hypoprothrombinemia and vitamin K-dependent clotting factor deficiency) and hemorrhagic disease. The evidence for bone health is less established: it's possibly effective for osteoporosis, though the data we hold rates that benefit as uncertain.

The evidence, ingredient by ingredient Vitamin K

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Orally, vitamin K is generally well tolerated in amounts found in food and most supplements for healthy people. The most common side effects are mild to moderate — nausea, diarrhea, stomach upset, and abdominal pain.

The safety data advises that you talk with your doctor before taking supplements, even though normal dietary amounts are fine. Vitamin K2 is rated likely safe in pregnancy and lactation.

Side effects, ingredient by ingredient Vitamin K

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Vitamin K.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 2 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take warfarin (Coumadin) or any blood thinner (anticoagulant), double-check with your doctor or pharmacist before adding this product. Vitamin K can reduce how well these medications work, and you may need a different dose or extra monitoring.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

This supplement is for people who need to correct a vitamin K deficiency or support bone health. If you take warfarin or any blood thinner, you must check with your doctor before starting it — vitamin K directly opposes these drugs.

For anyone else, talk it over with your pharmacist or doctor to make sure it fits your health plan.

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 Mar 22, 2024.

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

At a glance

General information

Key facts about MK-7 90 mcg, straight from the product label.

Brand Jarrow Formulas
Barcode (UPC) 790011300076
Net contents 120 Softgel(s)
Market status On market
Date entered into DSLD Mar 22, 2024
DSLD ID 307698
Product type Vitamin
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), No Allergies, Gluten Free, Dairy Free
From the label
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 MK-7 90 mcg by Jarrow Formulas, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Softgel(s)
Maximum serving Sizes:
1 Softgel(s)
Servings per container
120
UPC/BARCODE
790011300076
IngredientAmount% DV
Vitamin K290 mcg--

Other ingredients: Medium Chain Triglyceride, Bovine Gelatin, Glycerin, Water, Caramel, Olive Oil

Tap any ingredient to jump to its full detail below.

Label statements
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

Suggested Use: Adults take 1 softgel once a day or as directed by your qualified healthcare professional.

Formula

Jarrow Formulas MK-7 is naturally made via fermentation by Bacillus subtilis subsp. natto and is much better absorbed than K1 from spinach. MK-7 is a longer-acting form of vitamin K versus K1 and MK-4, and better supports carboxylation of specific proteins needed to build bones and support cardiovascular health.

Bioactive Vitamin K2

Precautions

Warning: Consult a healthcare professional before using this product if you are pregnant, nursing, under the age of 18, are taking medication (especially anticoagulants [e.g. Warfarin/Coumadin]) or have a medical condition; if adverse reactions occur, discontinue use.

Warning: Consult a healthcare professional before using this product if you are pregnant, nursing, under the age of 18, are taking medication (especially anticoagulants [e.g. Warfarin/Coumadin]) or have a medical condition; if adverse reactions occur, discontinue use. Keep out of the reach of children.

Do not use if safety seal is damaged or missing.

Storage

Store in a cool, dry place.

FDA Disclaimer Statement

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.

General Statements

Value size

Bone & joint

Formulation

Supports bone and cardiovascular health

Gluten free

No wheat, gluten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts or sesame.

FDA Statement of Identity

Dietary Supplement

Brand IP Statement(s)

Copyright 2022 Jarrow Formulas

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

MK-7 90 mcg by Jarrow Formulas label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

MK-7 90 mcg label

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)
What’s inside

The Ingredients in MK-7 90 mcg by Jarrow Formulas

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 container120 Amounts shown are per serving.

Vitamin K2

Interacts with
2 drugs
90 mcg per serving Form: Menaquinone-7

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 & interactions

Other (inactive) ingredients: Medium Chain Triglyceride, Bovine Gelatin, Glycerin, Water, Caramel, Olive Oil. These complete the product’s ingredient list but are not active constituents.

Interaction report

MK-7 90 mcg by Jarrow Formulas Drug Interactions

Want to check YOUR meds against MK-7 90 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 checker
2Drugs
2 Major

Ingredients driving the most interactions

Vitamin K2 2

Individual Drug Interactions

The ingredients in MK-7 90 mcg interact with 2 drugs. Click any drug to see the details.

1 of the 1 ingredient in MK-7 90 mcg interact with drugs. Each result below shows which ingredient is responsible. Vitamin K2

Each ingredient & the kinds of drugs it affects

For each ingredient in MK-7 90 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 K21 drug type · 2 drugs

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.

Likelihood Likely Evidence C
Vitamin K2 full monograph & interactions
The maker

Brand information

Manufacturer and brand details for MK-7 90 mcg, from the product label.

Jarrow Formulas

See all Jarrow Formulas products
Name
Jarrow Formulas, Inc.
City
Sherman Oaks
State
CA
ZipCode
91403
Phone Number
1-866-459-4154
Web Address
www.Jarrow.com
Pharmacist Counseling Corner

MK-7 90 mcg by Jarrow Formulas: Common Questions

Does MK-7 90 mcg by Jarrow Formulas interact with any medications?
Yes. Based on its ingredients, MK-7 90 mcg has a known interaction with 2 medications, including 2 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
MK-7 90 mcg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take MK-7 if I'm on warfarin?
No — not without your doctor's approval. Vitamin K directly reverses warfarin's blood-thinning effect, which could put you at risk for clots. Talk to the doctor who prescribes your warfarin before taking any vitamin K supplement.
What are the side effects?
Nausea, diarrhea, stomach upset, and abdominal pain are the most common. They're usually mild to moderate. Serious reactions are very rare when taken by mouth.
Is it safe to take during pregnancy?
Yes — vitamin K2 is rated likely safe in pregnancy and lactation. That said, it's always smart to mention any supplement to your doctor or midwife during pregnancy.
What is MK-7, and why this form of vitamin K?
MK-7 is a form of vitamin K2 that your body absorbs and uses over a longer period than some other vitamin K forms. It's involved in blood clotting and bone metabolism.
Does it really help bones?
The evidence suggests it possibly helps with osteoporosis, but the data isn't conclusive yet. It's definitely effective for treating actual vitamin K deficiencies.
Can I take this with other supplements?
We only have interaction data on file for warfarin and blood thinners. For any other medications or supplements you're on, run them through the checker on this page or ask your pharmacist.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if MK-7 90 mcg is safe with your meds?

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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.

MK-7 90 mcg label
Go deeper

The Full Monographs Behind MK-7 90 mcg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Vitamin K

Interacts with 2 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 supplements are sometimes used for deficiency...

Read the full Vitamin K monograph →
Sources

Sources & How We Checked

MK-7 90 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.

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
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. 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.
  3. 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
  4. Dietary vitamin K guidance: an effective strategy for stable control of oral anticoagulation? Nutr Rev. 2010;68(3):178-81. PubMed
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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.
  10. 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
  11. 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

See these in context on the Vitamin K monograph →

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

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