Major interaction on record — check this product against your medications before combining. Check your meds →
Dietary supplement

OsteoMD Ingredients & Drug Interactions

by 1MD Nutrition

OsteoMD label
See full label image
Capsule Category: Botanical With Nutrients
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking OsteoMD 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

OsteoMD is a dietary supplement by 1MD Nutrition with 4 active ingredients. Its ingredients are commonly taken for bone health and osteoporosis, correcting vitamin d deficiency, immune system support.Based on those ingredients, 858 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Vitamin D3, Calcium, Calzbone. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against OsteoMD by 1MD Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with OsteoMD by 1MD Nutrition — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of OsteoMD by 1MD Nutrition

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 11, 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 4 of its 4 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

OsteoMD contains 4 active ingredients. Vitamin D3 helps your body absorb calcium and supports bone health — it's especially important if you don't get enough sun exposure.

Vitamin K2 helps direct calcium to your bones and may support bone density. Calcium is the main mineral your bones are made of and is essential for bone strength.

Calzbone is an extract from Cissus quadrangularis, a plant used traditionally to support bone and connective tissue. The capsules also contain inactive ingredients (cellulose, cellulose powder, and powdered vegetable oil) that act as binders and fillers.

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: Scientifically-formulated bone support.
  • We looked for evidence on: Corticosteroid-induced osteoporosis, Fall prevention, Fractures, Frailty, Hyperparathyroidism-related bone loss, Osteoporosis — and 2 related terms.
  • The strongest evidence on file: Calcium is rated "Likely Effective" for Corticosteroid-induced osteoporosis (Natural Medicines).
  • Also on file: Calcium is rated "Likely Effective" for Hyperparathyroidism, Osteoporosis.
  • Also on file: Vitamin D is rated "Likely Effective" for Corticosteroid-induced osteoporosis.

Vitamin D3 is effective for treating rickets, osteomalacia (soft bones), renal bone disease, and related conditions. Vitamin K2 is effective for treating certain bleeding disorders and is possibly effective for osteoporosis.

Calcium is effective for low blood calcium and osteoporosis, and likely effective for osteoporosis specifically. For Calzbone (Cissus quadrangularis), the evidence shows it's possibly effective for weight management but insufficient reliable evidence exists for bone density, cholesterol levels, cancer, or epilepsy.

The evidence, ingredient by ingredient Vitamin D Vitamin K Calcium Cissus Quadrangularis

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 4 of the 4 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 4 of 4.
  • General safety write-ups exist for 4 of 4.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Vitamin D3 is generally well tolerated at recommended doses, though very high doses taken over time can cause toxicity (high blood calcium with symptoms like nausea and weakness). It's often used in pregnancy under medical guidance.

Vitamin K2 is generally safe at the amounts in food and most supplements; dietary amounts are fine in pregnancy and breastfeeding. Calcium is generally safe at recommended doses and adequate amounts are important during pregnancy and breastfeeding, though there's some concern that very high doses (over 1500–2000 mg daily) might slightly increase prostate cancer risk or cardiovascular risk — stay within recommended amounts and check with your doctor.

Calzbone is generally well tolerated short-term and may cause headache, insomnia, flatulence, or diarrhea at rates similar to placebo. However, long-term safety hasn't been well studied, and there isn't enough safety data to recommend it during pregnancy or breastfeeding — talk with your doctor if you're pregnant or nursing.

Side effects, ingredient by ingredient Vitamin D Vitamin K Calcium Cissus Quadrangularis

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?
  • 4 of the 4 matched ingredients can interact with medications — Calcium, Vitamin D, Vitamin K, Cissus Quadrangularis.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; heart-rhythm medications; lithium.
  • For scale: 859 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.

Double-check with your pharmacist if you take warfarin (a blood thinner) — vitamin K2 can reverse its effects. Also check if you take any heart rhythm medications (verapamil, diltiazem, digoxin), HIV integrase inhibitors (dolutegravir, elvitegravir), levothyroxine (thyroid hormone), cholesterol medications (atorvastatin), or diabetes drugs.

If you receive intravenous ceftriaxone (an antibiotic), inform your doctor before taking this product.

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.

OsteoMD is designed for bone health and uses four ingredients with varying levels of evidence. If you take warfarin, any heart medications, HIV drugs, thyroid hormone, diabetes medications, or certain antibiotics, check this product with your pharmacist first — there are significant interactions to sort out.

Otherwise, it's generally well tolerated at recommended doses, though very high intake of calcium or vitamin D over time carries risks.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 4 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 20, 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 OsteoMD, straight from the product label.

Brand 1MD Nutrition
Barcode (UPC) X002YS3FQD
Net contents 90 Capsule(s)
Market status On market
Date entered into DSLD Jun 20, 2024
DSLD ID 309823
Product type Botanical With Nutrients
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for OsteoMD by 1MD Nutrition, 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:
3 Capsule(s)
Maximum serving Sizes:
3 Capsule(s)
Servings per container
30
UPC/BARCODE
X002YS3FQD
IngredientAmount% DV
Vitamin D350 mcg250%
Vitamin K2180 mcg--
Calcium325 mg25%
Calzbone750 mg--

Other ingredients: Cellulose, Cellulose, Powder, Vegetable Oil, Powder

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.
Formulation

Manufactured in the USA from globally-sourced ingredients.

Scientifically-formulated bone support Promotes healthy bone density Supports bone strength Aids calcium absorption

Color may vary.

Shellfish-free Dairy-free Wheat-free Peanut-free Non-GMO

Brand IP Statement(s)

MenaQ7 Vitamin K2 as MK-7 MenaQ7 is the registered trademark of NattoPharma ASA, Norway; Patented in the United States and Canada (US Patent Numbers 8,728,553 & 8,354,129; Canada Patent Number 2,347,387). Calzbone Calzbone is a registered trademark of Verdure Science, Inc.

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.

Seals/Symbols

GMP Good Manufacturing Practice

General Statements

Questions? Call: (888) 393-4030

New

Doctor formulated

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, adults take three (3) capsules, once (1x) daily, with a meal, or as recommended by a healthcare practitioner.

Precautions

Warning: Consult a healthcare practitioner if you are pregnant or nursing, have a serious medical condition, or use any medications (especially blood thinners such as warfarin, coumarin, heparin, and aspirin).

Keep out of reach of children.

Do not use if safety seal is damaged or missing.

Storage

Store in a cool, dry place.

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

See for yourself

OsteoMD by 1MD Nutrition label

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

OsteoMD 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 OsteoMD by 1MD Nutrition

These are the 4 active ingredients this product is made of. Select any to open its full monograph.

Serving size3 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 D3

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 D3 monograph & interactions

Vitamin K2

Interacts with
2 drugs
180 mcg per serving Form: Mena Q7

Vitamin K is an essential nutrient your body needs for normal blood clotting and to support healthy bones. Most people get enough from food, but suppl...

Vitamin K2 monograph & interactions

Calcium

Interacts with
168 drugs
325 mg per serving Form: Calcium Hydroxyapatite

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet f...

Calcium monograph & interactions

Calzbone

Interacts with
86 drugs
750 mg per serving Form: Winged Treebine Stem Extract

Cissus quadrangularis is a traditional vine used mainly for bone health, joint pain, and weight management. Most of the supporting evidence comes from...

Calzbone monograph & interactions

Other (inactive) ingredients: Cellulose, Cellulose, Powder, Vegetable Oil, Powder. These complete the product’s ingredient list but are not active constituents.

Interaction report

OsteoMD by 1MD Nutrition Drug Interactions

Want to check YOUR meds against OsteoMD?

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
858Drugs
9 Major 232 Moderate 617 Minor

Ingredients driving the most interactions

Vitamin D3 715
Calcium 168
Calzbone 86
Vitamin K2 2

Individual Drug Interactions

The ingredients in OsteoMD interact with 858 drugs. Click any drug to see the details.

4 of the 4 ingredients in OsteoMD interact with drugs. Each result below shows which ingredient is responsible. Vitamin D3 Calcium Calzbone Vitamin K2

Each ingredient & the kinds of drugs it affects

For each ingredient in OsteoMD 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 D38 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 D3 full monograph & interactions

Calcium18 drug types · 168 drugs

Ceftriaxone (Rocephin)

Co-administration of intravenous calcium and ceftriaxone can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys.
Avoid administering intravenous calcium in any form, such as parenteral nutrition or Lactated Ringers, within 48 hours of intravenous ceftriaxone. Case reports in neonates show that administering intravenous ceftriaxone and calcium can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys. In several cases, neonates have died as a result of this interaction. So far there are no reports in adults; however, there is still concern that this interaction might occur in adults.

Likelihood Probable Evidence D
Dolutegravir (Tivicay)

Calcium seems to reduce levels of dolutegravir.
Advise patients to take dolutegravir either 2 hours before or 6 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium carbonate 1200 mg concomitantly with dolutegravir 50 mg reduces plasma levels of dolutegravir by almost 40%. Calcium appears to decrease levels of dolutegravir through chelation.

Likelihood Probable Evidence B
Elvitegravir (Vitekta)

Calcium seems to reduce levels of elvitegravir.
Advise patients to take elvitegravir either 2 hours before or 2 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium along with elvitegravir can reduce blood levels of elvitegravir through chelation.

Likelihood Probable Evidence B
Aluminum

Calcium citrate might increase aluminum absorption and toxicity. Other types of calcium do not increase aluminum absorption.
Calcium citrate can increase the absorption of aluminum when taken with aluminum hydroxide. The increase in aluminum levels may become toxic, particularly in individuals with kidney disease. However, the effect of calcium citrate on aluminum absorption is due to the citrate anion rather than calcium cation. Calcium acetate does not appear to increase aluminum absorption.

Likelihood Possible Evidence B
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Calcium might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption when taken in a fasting state.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide and calcium can be taken together if taken with food. However, if taken on an empty stomach, bictegravir/emtricitabine/tenofovir alafenamide should not be taken with, or 2 hours after, calcium containing products.

Likelihood Probable Evidence D
Bisphosphonates

Calcium reduces the absorption of bisphosphonates.
Advise patients to take bisphosphonates at least 30 minutes before calcium, but preferably at a different time of day. Calcium supplements decrease absorption of bisphosphonates.

Likelihood Probable Evidence C
Calcipotriene (Dovonex)

Taking calcipotriene with calcium might increase 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 calcium supplements might increase the risk of hypercalcemia.

Likelihood Possible Evidence B
Digoxin (Lanoxin)

Using intravenous calcium with digoxin might increase the risk of fatal cardiac arrhythmias.
Hypercalcemia increases the risk of fatal cardiac arrhythmias with digoxin. However, one retrospective analysis of clinical data suggests that intravenous calcium does not increase the risk of dysrhythmias or mortality in patients receiving digoxin.

Likelihood Possible Evidence B
Diltiazem (Cardizem, Others)

Theoretically, calcium may reduce the therapeutic effects of diltiazem.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, calcium might increase this risk of hypercalcemia and reduce the effectiveness of diltiazem.

Likelihood Probable Evidence D
Levothyroxine (Synthroid, Others)

Calcium seems to reduce the absorption and effectiveness of levothyroxine.
Advise patients to take levothyroxine and calcium supplements at least 4 hours apart. Calcium reduces levothyroxine absorption, probably by forming insoluble complexes. Calcium carbonate supplements reduce effectiveness of levothyroxine in patients with hypothyroidism.

Likelihood Probable Evidence B
Lithium

Theoretically, concomitant use of calcium and lithium may increase this risk of hypercalcemia.
Clinical research suggests that long-term use of lithium may cause hypercalcemia in 10% to 60% of patients. Theoretically, concomitant use of lithium and calcium supplements may further increase this risk.

Likelihood Possible Evidence B
Quinolone Antibiotics

Calcium seems to reduce the absorption of quinolone antibiotics.
Advise patients to take oral quinolones at least 2 hours before or 4-6 hours after calcium supplements or calcium-fortified foods. Taking calcium at the same time as oral quinolones can reduce quinolone absorption. Calcium binds to quinolones in the gut.

Likelihood Probable Evidence B
Raltegravir (Isentress)

Calcium may reduce levels of raltegravir.
Pharmacokinetic research shows that taking a single dose of calcium carbonate 3000 mg along with raltegravir 400 mg twice daily modestly decreases the mean area under the curve of raltegravir, but the decrease does not necessitate a dose adjustment of raltegravir. However, a case of elevated HIV-1 RNA levels and documented resistance to raltegravir has been reported for a patient taking calcium carbonate 1 gram three times daily plus vitamin D3 (cholecalciferol) 400 IU three times daily in combination with raltegravir 400 mg twice daily for 11 months. It is thought that calcium reduced raltegravir levels by chelation, leading to treatment failure.

Likelihood Possible Evidence B
Sotalol (Betapace)

Calcium seems to reduce the absorption of sotalol.
Advise patients to separate doses by at least 2 hours before or 4-6 hours after calcium. Calcium appears to reduce the absorption of sotalol, probably by forming insoluble complexes.

Likelihood Possible Evidence B
Tetracycline Antibiotics

Calcium seems to reduce the absorption of tetracycline antibiotics.
Advise patients to take oral tetracyclines at least 2 hours before, or 4-6 hours after calcium supplements. Taking calcium at the same time as oral tetracyclines can reduce tetracycline absorption. Calcium binds to tetracyclines in the gut.

Likelihood Probable Evidence C
Thiazide Diuretics

Taking calcium along with thiazides might increase the risk of hypercalcemia and renal failure.
Thiazides reduce calcium excretion by the kidneys. Using thiazides along with moderately large amounts of calcium carbonate increases the risk of milk-alkali syndrome (hypercalcemia, metabolic alkalosis, renal failure). Patients may need to have their serum calcium levels and/or parathyroid function monitored regularly.

Likelihood Probable Evidence C
Verapamil (Calan, Others)

Theoretically, calcium may reduce the therapeutic effects of verapamil.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, use of calcium supplements may increase this risk of hypercalcemia and reduce the effectiveness of verapamil.

Likelihood Probable Evidence D
Calcium Channel Blockers

Intravenous calcium may decrease the effects of calcium channel blockers; oral calcium is unlikely to have this effect.
Intravenous calcium is used to decrease the effects of calcium channel blockers in the management of overdose. Intravenous calcium gluconate has been used before intravenous verapamil (Isoptin) to prevent or reduce the hypotensive effects without affecting the antiarrhythmic effects. But there is no evidence that dietary or supplemental calcium when taken orally interacts with calcium channel blockers.

Likelihood Unlikely Evidence D
Calcium full monograph & interactions

Calzbone1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, Cissus quadrangularis might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Small clinical studies suggest that Cissus quadrangularis might reduce fasting blood glucose in individuals with overweight or obesity.

Likelihood Possible Evidence D
Calzbone full monograph & interactions

Vitamin K21 drug type · 2 drugs

Warfarin (Coumadin)

Vitamin K can antagonize and reverse the therapeutic effects of warfarin.
Vitamin K antagonizes the effects of warfarin. Excessive vitamin K intake, either from supplements or from changes in the diet, can reduce the anticoagulant effect of warfarin.

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

Brand information

Manufacturer and brand details for OsteoMD, from the product label.

1MD Nutrition

See all 1MD Nutrition products
Name
1MD Nutrition
City
Irvine
State
CA
ZipCode
92618
Phone Number
(888) 393-4030
Web Address
www.1md.org
Pharmacist Counseling Corner

OsteoMD by 1MD Nutrition: Common Questions

Does OsteoMD by 1MD Nutrition interact with any medications?
Yes. Based on its ingredients, OsteoMD has a known interaction with 858 medications, including 9 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
OsteoMD contains 4 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 OsteoMD if I'm pregnant or breastfeeding?
Vitamin D3 and calcium are often used during pregnancy at recommended amounts under doctor supervision. Vitamin K2 is likely safe during pregnancy and breastfeeding. However, Calzbone hasn't been studied enough — the safety data advises against it during pregnancy and breastfeeding. Talk with your doctor before starting this product if you're pregnant or nursing.
What are the most common side effects?
Calcium can cause belching, constipation, diarrhea, or stomach upset. Vitamin K2 may cause nausea, diarrhea, or stomach upset at low rates. Calzbone may cause headache, insomnia, flatulence, or diarrhea — though these rates were similar to placebo in studies. Vitamin D3 is usually well tolerated.
Is this product effective for bone health?
Vitamin D3 and calcium both have strong evidence for bone health — calcium is effective for low blood calcium and likely effective for osteoporosis, while vitamin D3 is effective for rickets and bone-softening diseases. Vitamin K2 is possibly effective for osteoporosis. Calzbone's evidence for bone health is insufficient.
Can I take too much of this product?
Yes. Very high doses of vitamin D3 over time can cause toxicity with symptoms like weakness and nausea. Calcium at very high doses (over 1500–2000 mg daily) has been weakly associated with increased prostate cancer and heart disease risk. Stick to the recommended dose and talk with your pharmacist if you take other sources of these nutrients.
What is Calzbone?
Calzbone is Cissus quadrangularis, a plant extract traditionally used for bone and connective tissue support. Studies suggest it may help with weight management, but we don't have enough reliable evidence yet for its effects on bone density.
Why do some of my medications need to be separated from calcium?
Calcium can bind with certain medications in your stomach, forming complexes that prevent them from being absorbed properly. For example, calcium reduces how much levothyroxine your body absorbs, which can make it less effective. That's why your pharmacist may ask you to take them several hours apart.

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

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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.

OsteoMD label
Go deeper

The Full Monographs Behind OsteoMD’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 → Herb & supplement monograph

Calcium

Interacts with 168 drugs

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet falls short. Most people do best getting...

Read the full Calcium monograph → Herb & supplement monograph

Cissus Quadrangularis

Interacts with 86 drugs

Cissus quadrangularis is a traditional vine used mainly for bone health, joint pain, and weight management. Most of the supporting evidence comes from animal studies and a small number of hu...

Read the full Cissus Quadrangularis monograph →
Sources

Sources & How We Checked

OsteoMD'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 104 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
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Vitamin K 11 references
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Calcium 62 references
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Cissus Quadrangularis 5 references
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  2. Oben JE, Ngondi JL, Momo CN, et al. The use of Cissus quadrangularis/Irvingia gabonensis combination in the management of weight loss: a double-blind placebo-controlled study. Lipids Health Dis 2008;7:12.
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See these in context on the Cissus Quadrangularis monograph →

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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.

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