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Dietary supplement

D-3 50 mcg + K-2 75 mcg Vitamin Ingredients & Drug Interactions

by Portions Master

D-3 50 mcg + K-2 75 mcg Vitamin label
See full label image
Tablet Or Pill Category: Vitamin
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking D-3 50 mcg + K-2 75 mcg Vitamin 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

D-3 50 mcg + K-2 75 mcg Vitamin is a dietary supplement by Portions Master with 2 active ingredients. Its ingredients are commonly taken for bone health and osteoporosis, correcting vitamin d deficiency, immune system support.Based on those ingredients, 715 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Vitamin D, Menaquinone-7. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master

Ask about any prescription or over-the-counter medication and we check it for interactions with D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master

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 Jul 23, 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 2 of its 2 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains 2 active ingredients: vitamin D (50 mcg, or 2,000 IU) and menaquinone-7, a form of vitamin K (75 mcg). Vitamin D helps your body absorb calcium and supports bone and immune health; menaquinone-7 (vitamin K-2) supports bone health and blood clotting.

The tablet also includes inactive ingredients—dextrose, cherry flavor, stearic acid, magnesium stearate, citric acid, and silicon dioxide—which serve as sweetener, flavoring, binders, and flow agents.

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: Support healthy bones, muscles, and heart.
  • We looked for evidence on: Cardiovascular disease (CVD), Corticosteroid-induced osteoporosis, Fall prevention, Fractures, Frailty, Heart failure — and 4 related terms.
  • The strongest evidence on file: Vitamin D is rated "Likely Effective" for Corticosteroid-induced osteoporosis (Natural Medicines).
  • Also on file: Vitamin D is rated "Possibly Effective" for Heart failure, Hyperparathyroidism-related bone loss.
  • Also on file: Vitamin K is rated "Possibly Effective" for Osteoporosis.

Vitamin D is effective for treating familial hypophosphatemia, osteomalacia (bone softening), renal osteodystrophy, rickets, and hypoparathyroidism. Menaquinone-7 (vitamin K) is effective for hypoprothrombinemia (low clotting factors), vitamin K-dependent clotting factor deficiency, warfarin anticoagulation, and hemorrhagic disease.

For osteoporosis, the evidence shows menaquinone-7 is possibly effective—meaning there is some promise but not yet strong proof.

The evidence, ingredient by ingredient Vitamin D 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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Vitamin D is generally safe at recommended doses but can cause toxicity if you take very high amounts over time; symptoms include high blood calcium (hypercalcemia), kidney disease markers (azotemia), and anemia. Rare symptoms of vitamin D excess also include bone loss in adults, slowed growth in children, eye inflammation, and light sensitivity.

Orally, vitamin D is well tolerated. Menaquinone-7 (vitamin K) taken by mouth is generally well tolerated; the most common side effects are mild and include nausea, stomach upset, abdominal pain, and diarrhea.

Side effects, ingredient by ingredient Vitamin D 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?
  • 2 of the 2 matched ingredients can interact with medications — Vitamin D, Vitamin K.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; heart-rhythm medications.
  • For scale: 716 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), do not start this product without talking to your doctor first—vitamin K can reduce warfarin's blood-thinning effect. Also double-check before taking this if you use thiazide diuretics, verapamil, diltiazem, digoxin, atorvastatin, calcipotriene, or aluminum-containing products.

Vitamin D can raise your blood calcium and interfere with how these medications work or how well your body absorbs them.

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 product pairs two vitamin D and K forms at moderate doses—both have evidence backing their use for bone and clotting support. However, if you take warfarin, a thiazide diuretic, a heart rhythm medication, atorvastatin, or digoxin, you'll want to review this with your doctor or pharmacist first, because both ingredients carry documented interactions that could affect how these drugs work.

If you don't take any of those medicines, check your exact medications using the tool on this page before you start.

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 Apr 23, 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 D-3 50 mcg + K-2 75 mcg Vitamin, straight from the product label.

Brand Portions Master
Barcode (UPC) 628176305080
Net contents 90 Chewable Tablet(s)
Market status On market
Date entered into DSLD Apr 23, 2024
DSLD ID 313474
Product type Vitamin
Supplement form Tablet Or Pill
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master, 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 Chewable Tablet(s)
Maximum serving Sizes:
1 Chewable Tablet(s)
Servings per container
90
UPC/BARCODE
628176305080
IngredientAmount% DV
Vitamin D50 mcg250%
Menaquinone-775 mcg--

Other ingredients: Dextrose, Cherry Flavor, Natural, Stearic Acid, Magnesium Stearate, Citric Acid, Silicon Dioxide

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.
Formula

Vitamin D-3 + K-2 helps support healthy bones, muscles, and heart. Vitamin D-3 is the body's preferred form of Vitamin D, which is crucial for proper absorption of calcium and phosphorus. Higher absorption rate helps support bones and heart health. Pairing Vitamin D with K-2 can help maximize the benefits of Vitamin D-3. The combination helps support calcium absorption and direction to the bones.

50 mcg D-3 per serving 75 mcg K-2 per serving

Suggested/Recommended/Usage/Directions

Suggested use 1 tablet taken 1 to 3 times daily, preferably with meals or as directed by a healthcare professional. For best results, chew tablet thoroughly before swallowing.

Precautions

Caution Do not exceed recommended dose.

Pregnant or nursing mothers, children under 18 years of age, individuals taking anti-coagulant drugs, such as Coumadin/Warfarin, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

This product is manufactured and packaged in a facility which may also process milk, soy, wheat, egg, peanuts, tree nuts, fish, and crustacean shellfish.

Keep out of the reach of children.

Do not use if safety seal is damaged or missing.

Pregnant or nursing mothers, children under 18 years of age, individuals taking anti-coagulant drugs, such as Coumadin/Warfarin, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

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.

Formulation

Heart and bone support

FDA Statement of Identity

Dietary Supplement

Storage

Store in a cool, dry place.

Seals/Symbols

Formulated in the USA

Brand IP Statement(s)

Copyright 2022, Portions Master, LLC

General Statements

Jer. 29:11

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

See for yourself

D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master label

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

D-3 50 mcg + K-2 75 mcg Vitamin 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 D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Chewable Tablet(s) Dosage formTablet Or Pill Servings per container90 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 D

Interacts with
715 drugs
50 mcg per serving Form: Cholecalciferol

Vitamin D is a fat-soluble vitamin that helps your body absorb calcium and is important for healthy bones, muscles, and immune function. Many people,...

Vitamin D monograph & interactions

Menaquinone-7

Interacts with
2 drugs
75 mcg per serving

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...

Menaquinone-7 monograph & interactions

Other (inactive) ingredients: Dextrose, Cherry Flavor, Natural, Stearic Acid, Magnesium Stearate, Citric Acid, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master Drug Interactions

Want to check YOUR meds against D-3 50 mcg + K-2 75 mcg Vitamin?

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
715Drugs
2 Major 80 Moderate 633 Minor

Ingredients driving the most interactions

Vitamin D 715
Menaquinone-7 2

Individual Drug Interactions

The ingredients in D-3 50 mcg + K-2 75 mcg Vitamin interact with 715 drugs. Click any drug to see the details.

2 of the 2 ingredients in D-3 50 mcg + K-2 75 mcg Vitamin interact with drugs. Each result below shows which ingredient is responsible. Vitamin D Menaquinone-7

Each ingredient & the kinds of drugs it affects

For each ingredient in D-3 50 mcg + K-2 75 mcg Vitamin 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.

Vitamin D8 drug types · 715 drugs

Aluminum

Vitamin D might increase aluminum absorption and toxicity, but this has only been reported in people with renal failure.
The protein that transports calcium across the intestinal wall can also bind and transport aluminum. This protein is stimulated by vitamin D, which may therefore increase aluminum absorption. This mechanism may contribute to increased aluminum levels and toxicity in people with renal failure, when they take vitamin D and aluminum-containing phosphate binders chronically.

Likelihood Probable Evidence B
Atorvastatin (Lipitor)

Vitamin D might reduce absorption of atorvastatin.
A small, low-quality clinical study shows that taking vitamin D reduces levels of atorvastatin and its active metabolites by up to 55%. However, while atorvastatin levels decreased, total cholesterol, low-density lipoprotein (LDL) cholesterol, and high-density lipoprotein (HDL) cholesterol levels did not substantially change. Atorvastatin is metabolized in the gut by CYP3A4 enzymes, and researchers theorized that vitamin D might induce CYP3A4, causing reduced levels of atorvastatin. However, this proposed mechanism was not specifically studied.

Likelihood Probable Evidence B
Calcipotriene (Dovonex)

Taking calcipotriene with vitamin D increases the risk for hypercalcemia.
Calcipotriene is a vitamin D analog used topically for psoriasis. It can be absorbed in sufficient amounts to cause systemic effects, including hypercalcemia. Theoretically, combining calcipotriene with vitamin D supplements might increase the risk of hypercalcemia.

Likelihood Probable Evidence D
Digoxin (Lanoxin)

Theoretically, hypercalcemia induced by high-dose vitamin D can increase the risk of arrhythmia from digoxin.
High doses of vitamin D can cause hypercalcemia. Hypercalcemia increases the risk of fatal cardiac arrhythmias with digoxin. Avoid vitamin D doses above the tolerable upper intake level (4000 IU daily for adults) and monitor serum calcium levels in people taking vitamin D and digoxin concurrently.

Likelihood Possible Evidence D
Diltiazem (Cardizem, Others)

Theoretically, hypercalcemia induced by high-dose vitamin D can reduce the therapeutic effects of diltiazem for arrhythmia.
High doses of vitamin D can cause hypercalcemia. Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically this could also occur with diltiazem. Avoid vitamin D doses above the tolerable upper intake level (4000 IU daily for adults) and monitor serum calcium levels in people taking vitamin D and diltiazem concurrently.

Likelihood Probable Evidence B
Thiazide Diuretics

Theoretically, taking thiazide diuretics and high-dose vitamin D can increase the risk of hypercalcemia.
Thiazide diuretics decrease urinary calcium excretion, which could lead to hypercalcemia if vitamin D supplements are taken concurrently. This has been reported in people being treated with vitamin D for hypoparathyroidism, and also in elderly people with normal parathyroid function who were taking a thiazide, vitamin D, and calcium-containing antacids daily.

Likelihood Probable Evidence D
Verapamil (Calan, Others)

Hypercalcemia induced by high-dose vitamin D can reduce the therapeutic effects of verapamil for arrhythmia.
Hypercalcemia due to high doses of vitamin D can reduce the effectiveness of verapamil in atrial fibrillation. Avoid vitamin D doses above the tolerable upper intake level (4000 IU daily for adults) and monitor serum calcium levels in people taking vitamin D and verapamil concurrently.

Likelihood Probable Evidence B
Cytochrome P450 3A4 (Cyp3A4) Substrates

Vitamin D might induce CYP3A4 enzymes and reduce the bioavailability of CYP3A4 substrates.
There is some concern that vitamin D might induce CYP3A4. In vitro research suggests that vitamin D induces CYP3A4 transcription. Additionally, observational research has found that increased UV light exposure and serum vitamin D levels are associated with decreased serum levels of CYP3A4 substrates such as tacrolimus and sirolimus, while no association between UV light exposure or vitamin D levels and levels of mycophenolic acid, a non-CYP3A4 substrate, was found. A small, low-quality clinical study shows that taking vitamin D reduces levels of the CYP3A4 substrate atorvastatin and its active metabolites by up to 55%; however, the clinical effects of atorvastatin were not reduced. While researchers theorized that vitamin D might induce CYP3A4, this proposed mechanism was not specifically studied.

Likelihood Possible Evidence D
Vitamin D full monograph & interactions

Menaquinone-71 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
Menaquinone-7 full monograph & interactions
The maker

Brand information

Manufacturer and brand details for D-3 50 mcg + K-2 75 mcg Vitamin, from the product label.

Portions Master

See all Portions Master products
Name
Portions Master, LLC
Street Address
PO Box 18215
City
Fairfield
State
OH
ZipCode
45018
Phone Number
1 (800) 319-7102
Web Address
portionsmaster.com
Pharmacist Counseling Corner

D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master: Common Questions

Does D-3 50 mcg + K-2 75 mcg Vitamin by Portions Master interact with any medications?
Yes. Based on its ingredients, D-3 50 mcg + K-2 75 mcg Vitamin has a known interaction with 715 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?
D-3 50 mcg + K-2 75 mcg Vitamin contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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 this if I'm pregnant or breastfeeding?
Vitamin D is likely safe during pregnancy and breastfeeding at recommended doses, though use only under your doctor's guidance. Menaquinone-7 (vitamin K) is also likely safe during pregnancy and lactation. Check with your doctor or pharmacist about whether this product is right for you and your situation.
What are the side effects?
Vitamin D is generally well tolerated at this dose. Menaquinone-7 can cause mild gastrointestinal upset—nausea, stomach pain, or diarrhea—though these are not common. Very high doses of vitamin D over time can lead to toxicity with symptoms like high blood calcium, bone loss, or vision problems, but this product delivers a moderate dose.
Is vitamin D really just for bones?
Vitamin D helps your body absorb calcium for bone strength, but it also supports your immune system and overall health. This product supplies 2,000 IU (50 mcg), which is within the recommended daily intake for most adults.
What is menaquinone-7, and why is it different from other vitamin K?
Menaquinone-7 is a form of vitamin K called K-2, found in some fermented foods and produced by bacteria. Unlike vitamin K-1 (from leafy greens), K-2 may stay in your body longer and support bone and cardiovascular health, though the evidence for osteoporosis is still developing.
Can I take this with my multivitamin?
Check the label of your multivitamin first—it may already contain vitamin D or vitamin K. If it does, you could be doubling up, and excess vitamin D can cause toxicity over time. Review both products with your pharmacist to make sure the total dose is safe.
Why do I need to be careful if I'm on warfarin?
Vitamin K can reverse warfarin's blood-thinning effect, which could put you at risk for clots. Even though this product has only 75 mcg of vitamin K, consistency matters—your warfarin dose is tuned to your regular vitamin K intake, and a supplement can throw that off. Always tell your doctor before adding any vitamin K product.

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

Not sure if D-3 50 mcg + K-2 75 mcg Vitamin 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.

D-3 50 mcg + K-2 75 mcg Vitamin label
Go deeper

The Full Monographs Behind D-3 50 mcg + K-2 75 mcg Vitamin’s Ingredients

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

Herb & supplement monograph

Vitamin D

Interacts with 715 drugs

Vitamin D is a fat-soluble vitamin that helps your body absorb calcium and is important for healthy bones, muscles, and immune function. Many people, especially those with low sun exposure,...

Read the full Vitamin D monograph → 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

D-3 50 mcg + K-2 75 mcg Vitamin'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 37 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 D 26 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Tatro DS, ed. Drug Interactions Facts. Facts and Comparisons Inc., St. Louis, MO. 1999.
  3. Koutkia P, Chen TC, Holick MF. Vitamin D intoxication associated with an over-the-counter supplement. N Engl J Med 2001;345:66-7. PubMed
  4. Bar-Or D, Yoel G. Calcium and calciferol antagonize effect of verapamil in atrial fibrillation. Br Med J 1981;282:1585-6.
  5. Demontis R, Leflon A, Fournier A, et al. 1 alpha(OH) vitamin D3 increases plasma aluminum in hemodialyzed patients taking AI(OH)3. Clin Nephrol 1986;26:146-9.
  6. Crowe M, Wollner L, Griffiths RA. Hypercalcemia following vitamin D and thiazide therapy in the elderly. Practitioner 1984;228:312-3.
  7. Parfitt AM. Thiazide-induced hypercalcemia in vitamin D-treated hypoparathyroidism. Ann Intern Med 1972;77:557-63. PubMed
  8. Thiazide diuretics and the risk of osteoporosis. Pharmacist's Letter/Prescriber's Letter 2003;19(11):191105.
  9. Moon J. The role of vitamin D in toxic metal absorption. J Am Coll Nutr 1994;13:559-64.
  10. Demontis R, Reissi D, Noel C, et al. Indirect clinical evidence that 1alphaOH vitamin D<SUB>3</SUB> increases the intestinal absorption of aluminum. Clin Nephrol 1989;31:123-7.
  11. Adler AJ, Berlyne GM. Duodenal aluminum absorption in the rat: effect of vitamin D. Am J Physiol 1985;249:G209-13. PubMed
  12. Schwartz JB. Effects of vitamin D supplementation in atorvastatin-treated patients: A new drug interaction with an unexpected consequence. Clin Pharmacol Ther 2009;85:198-203. PubMed
  13. Dietary reference intakes for calcium and vitamin D. Institute of Medicine, November 30, 2010. Available at: http://www.iom.edu/~/media/Files/Report%20Files/2010/Dietary-Reference-Intakes-for-Calcium-and-Vitamin-D/Vitamin%20D%20and%20Calcium%202010%20Repo
  14. Cox KA, Dunn MA. Aluminum toxicity alters the regulation of calbindin-D28k protein and mRNA expression in chick intestine. J Nutr 2001;131:2007-13. PubMed
  15. Escribano, J., Balaguer, A., Pagone, F., Feliu, A., and Roque, I. Figuls. Pharmacological interventions for preventing complications in idiopathic hypercalciuria. Cochrane.Database.Syst.Rev. 2009;(1):CD004754. PubMed
  16. Carlton, S., Clopton, D., and Cappuzzo, K. A. Vitamin D deficiency: appropriate replenishment therapies and the effects of vitamin D toxicity. Consult Pharm 2010;25(3):171-177. PubMed
  17. Wang, H., Xia, N., Yang, Y., and Peng, D. Q. Influence of vitamin D supplementation on plasma lipid profiles: a meta-analysis of randomized controlled trials. Lipids Health Dis. 2012;11:42. PubMed
  18. Turner AN, Carr Reese P, Fields KS, Anderson J, Ervin M, Davis JA, Fichorova RN, Roberts MW, Klebanoff MA, Jackson RD. A blinded, randomized controlled trial of high-dose vitamin D supplementation to reduce recurrence of bacterial vaginosis. Am J Obstet G PubMed
  19. Weiner M, Epstein FH. Signs and symptoms of electrolyte disorders. Yale J Biol Med. 1970;43(2):76-109.
  20. Lappe J, Watson P, Travers-Gustafson D, Recker R, Garland C, Gorham E, Baggerly K, McDonnell SL. Effect of Vitamin D and Calcium Supplementation on Cancer Incidence in Older Women: A Randomized Clinical Trial. JAMA. 2017 Mar 28;317(12):1234-1243. PubMed
  21. Roth DE, Leung M, Mesfin E, Qamar H, Watterworth J, Papp E. Vitamin D supplementation during pregnancy: state of the evidence from a systematic review of randomised trials. BMJ. 2017;359:j5237. PubMed
  22. Murai IH, Fernandes AL, Sales LP, et al. Effect of a single high dose of vitamin D3 on hospital length of stay in patients with moderate to severe COVID-19: A randomized clinical trial. JAMA. 2021.
  23. Wang Z, Schuetz EG, Xu Y, Thummel KE. Interplay between vitamin D and the drug metabolizing enzyme CYP3A4. J Steroid Biochem Mol Biol 2013;136:54-8. PubMed
  24. Doyle D, Browne U, Brickley A, Murphy D. Vitamin D-induced hypercalcaemia and acute kidney injury in sarcoidosis. BMJ Case Rep 2023;16(1):e250580. PubMed
  25. Williamson A, Martineau AR, Sheikh A, Jolliffe D, Griffiths CJ. Vitamin D for the management of asthma. Cochrane Database Syst Rev 2023;2(2):CD011511. PubMed
  26. Kinesya E, Santoso D, Gde Arya N, et al. Vitamin D as adjuvant therapy for diabetic foot ulcers: Systematic review and meta-analysis approach. Clin Nutr ESPEN 2023;54:137-143. PubMed

See these in context on the Vitamin D monograph →

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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