Cetyl Myristoleate Plus Ingredients & Drug Interactions
by Foster Regal
What is this page for?
First and foremost: checking Cetyl Myristoleate Plus 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
Cetyl Myristoleate Plus is a dietary supplement by Foster Regal with 3 active ingredients. Its ingredients are commonly taken for osteoarthritis, joint pain and stiffness, cartilage support.Based on those ingredients, 170 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Glucosamine Sulfate 2KCl. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cetyl Myristoleate Plus by Foster Regal
Ask about any prescription or over-the-counter medication and we check it for interactions with Cetyl Myristoleate Plus by Foster Regal — 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 Cetyl Myristoleate Plus by Foster Regal
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains three active ingredients. Glucosamine sulfate 2KCl is the main one—a compound your body uses to build and repair cartilage in your joints.
The other two actives are cetyl myristoleate complex and MSM (methylsulfonylmethane), both included for joint support, though we don't hold detailed data on them here. The capsules also contain gelatin, vegetable magnesium stearate, and silica as inactive ingredients to hold everything together.
Does it work?
Strong evidence
Glucosamine sulfate is likely effective for osteoarthritis—that's when cartilage in your joints wears down over time. For aging skin, back pain, cancer, and liver metabolic issues, the evidence we have isn't strong enough to rate it either way.
We don't hold effectiveness ratings for cetyl myristoleate complex or MSM on this product.
How safe is it?
Well-documented data
Glucosamine taken by mouth is generally well tolerated. Common side effects are mild—bloating, constipation, cramps, diarrhea, heartburn, or nausea.
Rarely, allergic reactions happen; one review found that about 72% of adverse event reports involved hypersensitivity, ranging from mild itching or swelling to more serious breathing trouble. Anaphylaxis is very rare.
There's also been the occasional report of asthma flare-ups linked to glucosamine products. The safety data advises against taking this during pregnancy because there isn't enough information to know it's safe.
While breastfeeding, the data is also insufficient, so you should avoid it unless your doctor tells you otherwise.
Meds to double-check
Major interaction found
If you take warfarin (Coumadin) or any blood thinner, check with your doctor or pharmacist before starting—glucosamine can boost their effect and raise bleeding risk. Chemotherapy drugs like etoposide or doxorubicin should also be discussed.
You'll also want to review any antidiabetes medications and acetaminophen use, as Minor interactions are documented. No interactions are documented for the cetyl myristoleate complex or MSM in this product.
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 may help with osteoarthritis pain, but it's a must-check if you take warfarin or chemotherapy drugs—talk it over with your doctor or pharmacist first. If you're pregnant, breastfeeding, or dealing with asthma, that's another conversation to have.
It's generally well tolerated, but allergic reactions do happen in some people.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 11, 2022.
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 Cetyl Myristoleate Plus, straight from the product label.
| Brand | Foster Regal |
|---|---|
| Barcode (UPC) | 364175510123 |
| Net contents | 120 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Apr 11, 2022 |
| DSLD ID | 260169 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Kosher, Gluten 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 Cetyl Myristoleate Plus by Foster Regal, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Glucosamine Sulfate 2KCl | 550 mg | -- |
| Cetyl Myristoleate Complex | 500 mg | -- |
| MSM | 500 mg | -- |
Other ingredients: Gelatin, Vegetable Magnesium Stearate, Silica
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
Directions: As a dietary supplement, take 2 capsules twice daily with a meal.
Formula
Cetyl Myristoleate nutritionally supports healthy joint function. Glucosamine helps promote cartilage regeneration and healthy joints. MSM helps maintain healthy joints and cartilage.
Mfg. in a Ko Kosher Certified, FDA Registered Facility using Good Manufacturing Practices (GMPs)
Precautions
Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.
Keep out of reach of children.
Caution: If you are pregnant or nursing, consult your physician before taking this product.
Storage
Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees to 30 degrees C).
Formulation
Mfg. in a Ko Kosher Certified, FDA Registered Facility using Good Manufacturing Practices (GMPs)
Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.
Nutritionally supports healthy joint function.
Gluten free
Made in USA
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.
Brand IP Statement(s)
Foster Regal The best choice.
Copyright OptiMSM
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cetyl Myristoleate Plus by Foster Regal 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 Cetyl Myristoleate Plus by Foster Regal
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container60 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.
Glucosamine Sulfate 2KCl
Interacts with170 drugs
Glucosamine is a natural compound found in cartilage and joint fluid, and it is one of the most popular supplements for osteoarthritis, especially of...
Glucosamine Sulfate 2KCl monograph & interactionsCetyl Myristoleate Complex
MSM
Other (inactive) ingredients: Gelatin, Vegetable Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.
Cetyl Myristoleate Plus by Foster Regal Drug Interactions
HelloPharmacist Interaction Report
Cetyl Myristoleate Plus by Foster Regal contains glucosamine, which interacts with several medications.
The most serious concern is with warfarin (Coumadin), a blood thinner (anticoagulant). Glucosamine may boost warfarin's blood-thinning effects and raise your risk of bruising and bleeding; case reports have shown significant increases in INR (a measure of how thin your blood is) in patients who were stable on warfarin before adding glucosamine.
Read the full breakdown — every affected drug type, severity by severity
Topoisomerase II inhibitors (chemotherapy drugs like etoposide and doxorubicin) are another concern at Moderate severity. Lab studies suggest glucosamine might make these cancer drugs less effective, though this hasn't been proven in people.
Glucosamine also carries Minor interactions with antidiabetes drugs and acetaminophen (Tylenol). While the diabetes concern is now thought unlikely, acetaminophen may reduce glucosamine's pain-relief effect in osteoarthritis.
We could not check the safety data for cetyl myristoleate complex and MSM, as we hold no interaction monographs for those ingredients. Altogether, these interactions span 170 individual medications.
Use the medication checker below to verify your specific prescriptions before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cetyl Myristoleate Plus?
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 Cetyl Myristoleate Plus interact with 170 drugs. Click any drug to see the details.
1 of the 3 ingredients in Cetyl Myristoleate Plus interact with drugs. Each result below shows which ingredient is responsible. Glucosamine Sulfate 2KCl
WarfarinWarfarin
How Warfarin interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclWarfarin (coumadin) Major
Interaction Summary
Glucosamine might increase the anticoagulant effects of warfarin and increase the risk of bruising and bleeding.
Read the full Glucosamine Sulfate 2kcl + Warfarin interactionWarfarin SodiumCoumadin, Panwarfin, Sofarin
How Warfarin Sodium interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclWarfarin (coumadin) Major
Interaction Summary
Glucosamine might increase the anticoagulant effects of warfarin and increase the risk of bruising and bleeding.
Read the full Glucosamine Sulfate 2kcl + Warfarin Sodium interactionDaunorubicin CitrateDaunoXome
How Daunorubicin Citrate interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Daunorubicin Citrate interactionDaunorubicin HydrochlorideCerubidine
How Daunorubicin Hydrochloride interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Daunorubicin Hydrochloride interactionDaunorubicin, CytarabineVyxeos
How Daunorubicin, Cytarabine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Daunorubicin, Cytarabine interactionDoxorubicinAdriamycin, Caelyx, Doxil, Myocet, Rubex
How Doxorubicin interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Doxorubicin interactionEpirubicinEllence
How Epirubicin interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Epirubicin interactionEtoposideEtopophos, VePesid, VP16
How Etoposide interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Etoposide interactionIdarubicinIdamycin
How Idarubicin interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Idarubicin interactionIrinotecanCamptosar, Onivyde
How Irinotecan interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Irinotecan interactionIrinotecan Hydrochloride
How Irinotecan Hydrochloride interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Irinotecan Hydrochloride interactionMitoxantroneNovantrone
How Mitoxantrone interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Mitoxantrone interactionTeniposideVumon
How Teniposide interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Teniposide interactionTopotecanHycamtin
How Topotecan interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Topotecan interactionValrubicinValstar
How Valrubicin interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclTopoisomerase Ii Inhibitors Moderate
Interaction Summary
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
Read the full Glucosamine Sulfate 2kcl + Valrubicin interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAntidiabetes Drugs Minor
Interaction Summary
Despite initial concerns, it is unlikely that glucosamine will interfere with the effects of antidiabetes drugs.
Read the full Glucosamine Sulfate 2kcl + Acarbose interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Cetyl Myristoleate Plus — through 1 ingredient. Tap an ingredient for the detail:
Glucosamine Sulfate 2kclAcetaminophen (tylenol, Others) Minor
Interaction Summary
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Read the full Glucosamine Sulfate 2kcl + Acetaminophen, Caffeine, Isometheptene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cetyl Myristoleate Plus with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Glucosamine Sulfate 2KCl
Warfarin (Coumadin)
Glucosamine might increase the anticoagulant effects of warfarin and increase the risk of bruising and bleeding.
In two individual case reports, glucosamine/chondroitin combinations were associated with a significant increase in international normalized ratio (INR) in patients previously stabilized on warfarin. In one case, the increase in INR occurred only after tripling the dose of a glucosamine/chondroitin supplement from 500 mg/400 mg daily to 1500/1200 mg daily. Additionally, 20 voluntary case reports to the U.S. Food & Drug Administration (FDA) have linked glucosamine plus chondroitin with increased INR, bruising, and bleeding in patients who were also taking warfarin. There have also been 20 additional case reports to the World Health Organization (WHO) that link glucosamine alone to increased INR in patients taking warfarin. The mechanism of this interaction is unclear. Glucosamine is a small component of heparin, but is not thought to have anticoagulant activity; however, animal research suggests that it might have antiplatelet activity.
Topoisomerase Ii Inhibitors
Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
In vitro research suggests that glucosamine might induce resistance to etoposide (VP16, VePesid) and doxorubicin (Adriamycin) by reducing inhibition of topoisomerase II, an enzyme required for DNA replication in tumor cells. This effect has not been reported in humans.
Acetaminophen (Tylenol, Others)
Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Anecdotal reports suggest that adding glucosamine to an acetaminophen regimen might decrease pain control in patients with osteoarthritis. Some research suggests that the sulfate portion of glucosamine sulfate might contribute to its effect in osteoarthritis. Since acetaminophen metabolism requires sulfur and reduces serum sulfate concentrations, acetaminophen could theoretically interfere with the action of glucosamine sulfate. Conversely, the administration of sulfate could theoretically decrease the effectiveness of acetaminophen in sulfate-deficient people by increasing its clearance.
Antidiabetes Drugs
Despite initial concerns, it is unlikely that glucosamine will interfere with the effects of antidiabetes drugs.
In vitro and animal research has suggested that glucosamine might increase insulin resistance or decrease insulin production. This has raised concerns that taking glucosamine might worsen diabetes and decrease the effectiveness of diabetes drugs. However, clinical research suggests that glucosamine does not have adverse effects on blood glucose or glycated hemoglobin (HbA1C) in healthy, obese, or type 2 diabetes patients.
Brand information
Manufacturer and brand details for Cetyl Myristoleate Plus, from the product label.
Foster Regal
See all Foster Regal products- Name
- Foster Regal Laboratories
- Street Address
- 115 S.C.T. Ct.
- City
- White House
- State
- TN
- ZipCode
- 37188
Cetyl Myristoleate Plus by Foster Regal: Common Questions
Does Cetyl Myristoleate Plus by Foster Regal interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does glucosamine really help osteoarthritis?
What are the most common side effects?
Can I take this if I'm pregnant?
I'm on acetaminophen for pain. Can I also take this?
What does MSM do in this product?
Are there any fillers in this?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cetyl Myristoleate Plus is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Cetyl Myristoleate Plus’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Cetyl Myristoleate Plus'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 58 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.
Glucosamine 58 references
- Adams ME. Hype about glucosamine. Lancet 1999;354:353-4. PubMed
- Balkan B, Dunning BE. Glucosamine inhibits glucokinase in vitro and produces a glucose-specific impairment of in vivo insulin secretion in rats. Diabetes 1994;43:1173-9. PubMed
- Giaccari A, Morviducci L, Zorretta D, et al. In vivo effects of glucosamine on insulin secretion and insulin sensitivity in the rat: possible relevance to the maladaptive responses to chronic hyperglycaemia. Diabetologia 1995;38:518-24. PubMed
- Holmang A, Nilsson C, Niklasson M, et al. Induction of insulin resistance by glucosamine reduces blood flow but not interstitial levels of either glucose or insulin. Diabetes 1999;48:106-11. PubMed
- Houpt JB, McMillan R, Wein C, Paget-Dellio SD. Effect of glucosamine hydrochloride in the treatment of pain of osteoarthritis of the knee. J Rheumatol 1999;26:2423-30.
- Barclay TS, Tsourounis C, McCart GM. Glucosamine. Ann Pharmacother 1998;32:574-9.
- Shankar RR, Zhu JS, Baron AD. Glucosamine infusion in rats mimics the beta-cell dysfunction of non-insulin-dependent diabetes mellitus. Metabolism 1998;47:573-7.
- Almada A, Harvey P, Platt K. Effects of chronic oral glucosamine sulfate on fasting insulin resistance index (FIRI) in non-diabetic individuals. FASEB J 2000;14:A750.
- Reginster JY, Deroisy R, Rovati LC, et al. Long-term effects of glucosamine sulfate on osteoarthritis progression: a randomised, placebo-controlled trial. Lancet 2001;357:251-6.
- Does glucosamine increase serum lipid levels and blood pressure? Pharmacist's Letter/Prescriber's Letter 2001;17(11):171115.
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