Vitamin K-2 100 mcg Ingredients & Drug Interactions
by LuckyVitamin
What is this page for?
First and foremost: checking Vitamin K-2 100 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 K-2 100 mcg is a dietary supplement by LuckyVitamin 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 powder, Vitamin K2. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Vitamin K-2 100 mcg by LuckyVitamin
Ask about any prescription or over-the-counter medication and we check it for interactions with Vitamin K-2 100 mcg by LuckyVitamin — 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 K-2 100 mcg by LuckyVitamin
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 has two active ingredients. Vitamin K2 is a fat-soluble vitamin that your body uses to make clotting factors and support bone health.
Alfalfa powder is a plant-based ingredient that's been used traditionally for nutritional support. The capsule also contains inactive ingredients — hypromellose, ascorbyl palmitate, rice flour, and silicon dioxide — which are fillers and binders that hold the capsule together.
Does it work?
Strong evidence
Vitamin K2 is effective for treating vitamin K deficiency conditions, including low levels of vitamin K-dependent clotting factors and hemorrhagic disease (abnormal bleeding). It's also effective for managing warfarin anticoagulation when prescribed by your doctor.
For osteoporosis, the evidence suggests it's possibly effective, but the data isn't conclusive. Alfalfa powder, on the other hand, has insufficient evidence behind it — we don't have solid research backing its use for diabetes, digestive upset, high cholesterol, or menopausal symptoms.
How safe is it?
Well-documented data
Vitamin K2 taken by mouth is generally well tolerated. The most common side effects are mild — diarrhea, nausea, and stomach upset.
These are rare and infrequent. The safety notes advise checking with your doctor before taking vitamin K supplements, even though dietary amounts are fine.
Alfalfa powder also appears well tolerated in small amounts, though it can cause gas, bloating, diarrhea, and abdominal discomfort — especially in the first week. A rare serious effect, a lupus-like syndrome, has been reported after long-term use.
Because alfalfa has estrogen-like activity, the safety data advises against it in supplement amounts during pregnancy, and there isn't enough data to be sure about breastfeeding — talk with your doctor or pharmacist before use if you're pregnant or nursing.
Meds to double-check
Major interaction found
Before you start, double-check with your pharmacist if you take warfarin or any blood thinner — this is a Major interaction. Also flag any photosensitizing drugs, birth control pills, hormone therapy, immunosuppressant medications, or diabetes drugs you're on, as the alfalfa in this product may interfere with them (all Moderate).
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.
If you take warfarin or any blood thinner, do not take this product without your doctor's explicit approval — vitamin K can interfere with how it works. If you're on birth control, hormone therapy, diabetes medication, immunosuppressants, or photosensitizing drugs, check with your pharmacist first.
Otherwise, for someone looking for vitamin K support without those medications, this is generally well tolerated.
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 Mar 22, 2023.
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 K-2 100 mcg, straight from the product label.
| Brand | LuckyVitamin |
|---|---|
| Barcode (UPC) | 810026421174 |
| Net contents | 100 Veg Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Mar 22, 2023 |
| DSLD ID | 283333 |
| Product type | Vitamin |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), Women (not pregnant or lactating), 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 K-2 100 mcg by LuckyVitamin, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin K2 | 100 mcg | 83% |
| Alfalfa powder | 250 mg | -- |
Other ingredients: Hypromellose, Ascorbyl Palmitate, Rice Flour, 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.
Suggested/Recommended/Usage/Directions
Suggested Usage: Take 1 capsule daily with a meal.
Formula
Although vitamin K is historically known for its role in normal blood clotting function, we now know that vitamin K is also essential to bone, cardiovascular, and nervous system health. As a biologically active form of vitamin K, K-2 is important for the formation of healthy, strong bone matrix. Vitamin K's role in arterial health revolves around its ability to support proper calcium metabolism in vascular structures.
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.
Precautions
Caution: For adults only.
Do not use if pregnant, nursing, or allergic or contraindicated to aspirin. Consult physician if taking medication (especially blood thinners such as warfarin, Coumadin, heparin and aspirin) or have a medical condition.
Do not use if pregnant, nursing, or allergic or contraindicated to aspirin.
Discontinue use two weeks prior to surgery or if stomach upset occurs.
Keep out of reach of children.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
General Statements
1 year happiness guarantee
Seals/Symbols
Guaranteed Quality & Potency
Formulation
Supports bone health Supports proper calcium metabolism
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
Natural color variation may occur in this product.
Non-GMO
Vegan
FDA Statement of Identity
Dietary Supplement
Storage
Store in a cool, dry place after opening.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Vitamin K-2 100 mcg by LuckyVitamin 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 K-2 100 mcg by LuckyVitamin
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Veg Capsule(s) Dosage formCapsule Servings per container100 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 powder
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 powder monograph & interactionsOther (inactive) ingredients: Hypromellose, Ascorbyl Palmitate, Rice Flour, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.
Vitamin K-2 100 mcg by LuckyVitamin Drug Interactions
HelloPharmacist Interaction Report
Vitamin K-2 100 mcg by LuckyVitamin contains two active ingredients, and both can interact with medications you may be taking.
The most serious concern is with warfarin (Coumadin), a blood thinner (anticoagulant). Both vitamin K2 and alfalfa powder contain vitamin K, which can reverse warfarin's effects and reduce how well it prevents blood clots — a Major interaction that needs your doctor's direct attention.
Read the full breakdown — every affected drug type, severity by severity
Alfalfa powder also interacts with several other drug types. It may interfere with photosensitizing drugs (those that make you sensitive to sun) at a Moderate level.
It can theoretically reduce the effectiveness of birth control pills and hormone therapy because alfalfa has estrogen-like compounds in it. Alfalfa may also decrease the effectiveness of immunosuppressant medications (drugs that calm down your immune system) and could increase the risk of low blood sugar (hypoglycemia) if you take diabetes medications — both Moderate interactions.
Altogether, these interactions span 577 individual medications. We could not check every interaction in our data, so use the medication checker on this page to verify your exact prescriptions and supplements before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Vitamin K-2 100 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 K-2 100 mcg interact with 583 drugs. Click any drug to see the details.
2 of the 2 ingredients in Vitamin K-2 100 mcg interact with drugs. Each result below shows which ingredient is responsible. Alfalfa powder Vitamin K2
WarfarinWarfarin
How Warfarin interacts with Vitamin K-2 100 mcg — through 2 ingredients. Tap an ingredient for the detail:
Alfalfa PowderWarfarin (coumadin) Major
Interaction Summary
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Read the full Alfalfa Powder + 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 K-2 100 mcg — through 2 ingredients. Tap an ingredient for the detail:
Alfalfa PowderWarfarin (coumadin) Major
Interaction Summary
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Read the full Alfalfa Powder + 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 K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa Powder + 6-mercaptopurine interactionAbrocitinibCibinqo
How Abrocitinib interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa Powder + Abrocitinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, alfalfa might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Read the full Alfalfa Powder + Acarbose interactionAcepromazineAtravet
How Acepromazine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acepromazine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + 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 K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + 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 K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + 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 K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Ibuprofen interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetazolamide interactionAcetohexamideDymelor
How Acetohexamide interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs, Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acetohexamide interactionAcitretinSoriatane
How Acitretin interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa Powder + Acitretin interactionAdalimumabHumira
How Adalimumab interacts with Vitamin K-2 100 mcg — through 1 ingredient. Tap an ingredient for the detail:
Alfalfa PowderImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa Powder + Adalimumab interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Vitamin K-2 100 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 powder
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 K-2 100 mcg, from the product label.
LuckyVitamin
See all LuckyVitamin products- Name
- Lucky Health Group Inc.
- City
- Conshohocken
- State
- PA
- ZipCode
- 19428
- Phone Number
- 1-888-635-0474
- Web Address
- www.LuckyVitamin.com
Vitamin K-2 100 mcg by LuckyVitamin: Common Questions
Does Vitamin K-2 100 mcg by LuckyVitamin 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 pregnant or breastfeeding?
What are the side effects I might notice?
Is this effective for osteoporosis?
What is alfalfa powder actually for?
Do I have to worry about fillers in this capsule?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Vitamin K-2 100 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.
The Full Monographs Behind Vitamin K-2 100 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 K-2 100 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
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