Vitamin K2 100 mcg Ingredients & Drug Interactions
by BIOVEA
What is this page for?
First and foremost: checking Vitamin K2 100 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 100 mcg is a dietary supplement by BIOVEA with 2 active ingredients. Its ingredients are commonly taken for supporting normal blood clotting, bone health, heart and vascular health.Based on those ingredients, 583 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Alfalfa, Vitamin K2. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Vitamin K2 100 mcg by BIOVEA
Ask about any prescription or over-the-counter medication and we check it for interactions with Vitamin K2 100 mcg by BIOVEA — 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 100 mcg by BIOVEA
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 2 active ingredients: vitamin K2 and alfalfa. Vitamin K2 is a form of vitamin K that plays a role in blood clotting and bone metabolism.
Alfalfa is a plant-based ingredient sometimes used in supplements, though the evidence for its health effects is limited. The capsule also contains inactive ingredients — hydroxypropyl methylcellulose, microcrystalline cellulose, and silicon dioxide — which are fillers and binders that help hold the capsule together.
Does it work?
Strong evidence
Vitamin K2 is rated Effective for treating vitamin K deficiency states and clotting disorders, and Possibly Effective for osteoporosis. Alfalfa, however, lacks reliable evidence for any of its proposed uses — the data we hold shows insufficient evidence for diabetes, indigestion, high cholesterol, and menopausal symptoms.
So while the vitamin K2 in this product has established uses, alfalfa's contribution to overall effectiveness is unproven.
How safe is it?
Well-documented data
Vitamin K taken by mouth is generally well tolerated in most people, though some experience mild gastrointestinal side effects like nausea, stomach upset, or diarrhea. Alfalfa is also generally well tolerated, but it too can cause abdominal discomfort, diarrhea, and gas.
Rare serious effects from alfalfa include a lupus-like syndrome with chronic use and dermatitis (skin inflammation). If you're pregnant, the safety data advises against alfalfa in supplement amounts due to its estrogen-like activity.
For breastfeeding, there isn't enough data on either ingredient in supplement doses, so talk with your doctor or pharmacist first.
Meds to double-check
Major interaction found
Check your medications if you take warfarin (Coumadin) or any blood thinner — both ingredients can reduce its effectiveness. Major concern here.
If you're on birth control, hormone replacement, diabetes medications, immunosuppressants, or photosensitizing drugs, run them through the tool below. These are Moderate-severity interactions with alfalfa.
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.
Consider this product if you have a diagnosed vitamin K deficiency or clotting disorder — but only with your doctor's okay if you're on warfarin or any blood thinner. Be cautious if you take birth control, hormone therapy, diabetes drugs, or immunosuppressants.
Talk with your pharmacist before you start, especially if you take any prescription medication.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 22, 2021.
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 100 mcg, straight from the product label.
| Brand | BIOVEA |
|---|---|
| Barcode (UPC) | 818423024615 |
| Net contents | 30 Vegetarian Capsule(s) |
| Market status | On market |
| Date entered into DSLD | May 22, 2021 |
| DSLD ID | 248954 |
| Product type | Botanical With Nutrients |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years) |
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 100 mcg by BIOVEA, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin K2 | 100 mcg | 83% |
| Alfalfa | 300 mg | -- |
Other ingredients: Hydroxypropyl Methylcellulose, Microcrystalline Cellulose, Silicon 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.
Seals/Symbols
GMP Compliant
Formulation
VG Vegan
Non-GMO
General Statements
Premium quality guaranteed since 2001. BIOVEA is committed to product quality to support you and your family's wellness goals. Because we feel so strongly about the quality, potency and purity of our products, we 100% guarantee your satisfaction with every purchase.
Guaranteed premium quality
Vitamin
Suggested/Recommended/Usage/Directions
Suggested Daily Intake: Take 1 capsule daily with a meal.
Precautions
Warning: Consult your health practitioner before consumption if you are currently taking any anti-coagulant drugs (such as warfarin, coumadin, heparin), or if you are pregnant/lactating.
Keep out of reach of children.
Do not us this product if the safety seal on the bottle is broken.
Storage
Store in a cool, dry place.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Vitamin K2 100 mcg by BIOVEA 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 100 mcg by BIOVEA
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Vegetarian Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
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 & interactionsAlfalfa
Interacts with583 drugs
Alfalfa is a nutrient-rich legume that people use for high cholesterol, menopause symptoms, and general wellness, but solid human evidence for most of...
Alfalfa monograph & interactionsOther (inactive) ingredients: Hydroxypropyl Methylcellulose, Microcrystalline Cellulose, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.
Vitamin K2 100 mcg by BIOVEA Drug Interactions
HelloPharmacist Interaction Report
BIOVEA's Vitamin K2 100 mcg contains two active ingredients — vitamin K2 and alfalfa — and both interact with blood thinners.
The most serious concern is warfarin (Coumadin). Vitamin K2 directly antagonizes warfarin's effects, meaning it can reverse how well the medication thins your blood.
Alfalfa also contains vitamin K and could theoretically reduce warfarin's effectiveness in the same way.
Read the full breakdown — every affected drug type, severity by severity
Alfalfa raises several other concerns. It may increase photosensitivity when you're on photosensitizing drugs (Moderate severity).
It has estrogenic compounds that could interfere with birth control pills or hormone therapy (Moderate severity each). It may also weaken immunosuppressants used after organ transplant or for autoimmune disease (Moderate severity), and it might lower blood sugar too much if you're on diabetes medications (Moderate severity).
Vitamin K2 itself has no other documented interactions beyond warfarin. Altogether, these interactions span 577 individual medications.
If you take any blood thinner, hormone medication, diabetes drug, or immunosuppressant, check your exact medications with the search tool below before starting this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Vitamin K2 100 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 100 mcg interact with 583 drugs. Click any drug to see the details.
2 of the 2 ingredients in Vitamin K2 100 mcg interact with drugs. Each result below shows which ingredient is responsible. Alfalfa Vitamin K2
WarfarinWarfarin
How Warfarin interacts with Vitamin K2 100 mcg — through 2 ingredients. Tap an ingredient for the detail:
AlfalfaWarfarin (coumadin) Major
Interaction Summary
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Read the full Alfalfa + Warfarin interactionVitamin 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 100 mcg — through 2 ingredients. Tap an ingredient for the detail:
AlfalfaWarfarin (coumadin) Major
Interaction Summary
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Read the full Alfalfa + Warfarin Sodium interactionVitamin K2Warfarin (coumadin) Major
Interaction Summary
Vitamin K can antagonize and reverse the therapeutic effects of warfarin.
Read the full Vitamin K2 + Warfarin Sodium interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa + 6-mercaptopurine interactionAbrocitinibCibinqo
How Abrocitinib interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa + Abrocitinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, alfalfa might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Read the full Alfalfa + Acarbose interactionAcepromazineAtravet
How Acepromazine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acepromazine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Ibuprofen interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetazolamide interactionAcetohexamideDymelor
How Acetohexamide interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs, Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetohexamide interactionAcitretinSoriatane
How Acitretin interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acitretin interactionAdalimumabHumira
How Adalimumab interacts with Vitamin K2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa + Adalimumab interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Vitamin K2 100 mcg with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Alfalfa
Warfarin (Coumadin)
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Alfalfa contains a large amount of vitamin K. This could theoretically interfere with the activity of warfarin.
Antidiabetes Drugs
Theoretically, alfalfa might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research suggests that alfalfa decreases blood sugar in diabetic mice. Also, in one case report, a diabetic patient experienced hypoglycemia after consuming alfalfa extract. Monitor blood glucose levels closely. Dose adjustments might be necessary.
Contraceptive Drugs
Theoretically, alfalfa might interfere with the activity of contraceptive drugs.
Alfalfa contains coumestrol, a phytoestrogen, and isoflavonoids, which have estrogenic effects.
Estrogens
Theoretically, alfalfa might interfere with hormone therapy.
Alfalfa contains coumestrol, a phytoestrogen, and isoflavonoids, which have estrogenic effects.
Immunosuppressants
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
In vitro research and human case reports suggest that alfalfa may have immunostimulant effects.
Photosensitizing Drugs
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Animal research suggests that excessive doses of alfalfa may increase photosensitivity, possibly due to its chlorophyll content. It is unclear if this effect would be clinically relevant in humans.
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 100 mcg, from the product label.
BIOVEA
See all BIOVEA products- Name
- BIOVEA
- Street Address
- 9160 E. Bahia Dr.
- City
- Scottsdale
- State
- AZ
- ZipCode
- 85260
- Web Address
- www.biovea.com
Vitamin K2 100 mcg by BIOVEA: Common Questions
Does Vitamin K2 100 mcg by BIOVEA interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm on warfarin?
What side effects might I see from this product?
Is it safe to take during pregnancy?
Does this product actually work for osteoporosis?
What's alfalfa doing in a vitamin K2 product?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Vitamin K2 100 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 100 mcg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Vitamin K
Interacts with 2 drugsVitamin 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 → Herb & supplement monographAlfalfa
Interacts with 583 drugsAlfalfa is a nutrient-rich legume that people use for high cholesterol, menopause symptoms, and general wellness, but solid human evidence for most of these uses is limited. It is best avoid...
Read the full Alfalfa monograph →Sources & How We Checked
Vitamin K2 100 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 43 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
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