MonaVie Active, Warfarin-Coumadin, and Vitamin K, Glucosamine, and Omega-3s


It isn’t common knowledge, but MonaVie can potentially be very harmful the elderly… those who are most likely on Warfarin/Coumadin.

An article in the American Journal of Health-System Pharmacy (Vol. 67, page 107-108, 1/15/2010), claims a Potential interaction between MonaVie Active and Warfarin (Katcher and Leung). To MonaVie’s credit this list this in their product FAQ, but they downplay it significantly:

“MonaVie Original and MonaVie Active are very safe to consume. Some prescription medicines, however, are known to interact with foods. Some food/nutrient interactions you should be aware of when taking MonaVie include vitamin K with blood thinners or anti-coagulants (e.g., Coumadin®), and potassium with blood pressure (e.g., metoprolol and propranolol) and ACE inhibitor medications (e.g., captopril).”

The article cites not just the Vitamin K but says, “The combination [Warfarin and MonaVie Active] may theoretically be problematic because of the ingredients in MonaVie: vitamin K, glucosamine, and esterified fatty acids.”

For those not familiar with the brand name Coumadin®, it is often better known as the generic medication Warfarin (the study’s warning).

The study goes on to note that the recommended dietary allowance of vitamin K for Warfarin patience is between 65-80 µg daily… citing this article of vitamin K and Warfarin.

The Katcher and Leung’s research article then notes that, “The recommended intake of MonaVie Active is 30mL twice daily, which would provide about 16-25 µg of vitamin K.” The researchers actually made a mistake in not knowing MonaVie’s recommended intake. It’s not surprising because MonaVie’s serving size is 1 ounce (30mL), but they recommend two servings in the morning and two at night. Thus, a person following recommendations would intake about 32-50 µg of vitamin K daily just from the four ounces of MonaVie.

This is when things get a little interesting. Katcher and Leung looked at glucosamine and found a couple of studies about its interaction with Warfarin. You can read those here and here. Katcher and Leung said, “These sources suggest that the use of glucosamine products over a minimum of three weeks can enhance warfarin effects as manifested by prolonged bleeding times or bleeding complications.”

Lastly, the researchers make note of omega-3 fatty acids and it’s possible interaction with warfarin. They cited three article including this one.

The researchers say that due to these three factors, “[patients] should be instructed to inform their health care providers when considering using MonaVie Active… In patients taking the combination, frequent monitoring of INRs and adverse events may be warranted, and adjustment of the warfarin dosage may be needed.” Of course this suggestion is based on a recommendation that is only half of what MonaVie recommends. One has to wonder what the researchers would conclude if they knew it was twice what they thought.

It sounds to me that MonaVie’s statement of “MonaVie Active [is] very safe to consume”, is quite a stretch. They should probably play it safe and change their website to recommend that no one on Warfarin/Coumadmin consume the product at all. I don’t see why a consumer who is on warfarin/Coumadin would spend a lot of money on this product especially when it lacks nutrition.

Originally posted 2010-08-28 07:05:44. Republished by Blog Post Promoter

The above article is intended to be accurate at the time of its original posting. MonaVie may change its pricing, product, or other policies at any time without notice.

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Posted by MonaVie Scam on March 4, 2019 in MonaVie & Medicine. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “MonaVie Active, Warfarin-Coumadin, and Vitamin K, Glucosamine, and Omega-3s”
  1. Beatrice Says:

    [Editor’s Note: Due to the length of this post, comments will be inserted inline. If you have a difficulty with this please leave shorter comments and make sure they are on the appropriate posts. It will make sure that our conversation stays on track. Unfortunately, this comment may not be completely intact due to its extraordinary length and the responses it required.]

    Maybe you should include links within your blogs to the actual MonaVie source you are citing. It seems to me that you may be reading old sources/FAQ files. Either that, or you need to update your blogs with accurate info. If you look at the following link, which is to MonaVie’s United States webpage, you can clearly see that under the Frequently Asked Questions section for MonaVie Active it states “If you are taking a prescription medication and are under the supervision of a physician, please consult with your physician or pharmacist before taking MonaVie.”
    As a matter of fact, MonaVie makes this suggestion to consult with a physician prior to taking any MonaVie product that is supplemented with ingredients that are known to have potential adverse effects on medications that people may be taking for a medical condition (they even specify recommendations for certain conditions, i.e. Diabetics who are considering use of MonaVie Pulse).

    [Editor’s Note: The nature of a blog is that it is not updated over time. In order to provide people with the best service, I can’t be responsible with updating every post (especially comments on this site). However, if specific inaccuracies are brought to my attention I fix them.

    In this case, I don’t believe I have an inaccuracy. I never said that one should not consult a physician or pharmacist when drinking MonaVie (not “taking MonaVie”, since it is a juice and not a medicine… you don’t “take” Cranberry juice). The disclaimer that MonaVie adds on its FAQ does not absolve them of the dangers of marketing a juice with a lot of vitamin K to those who are likely to have interactions with vitamin K. Remember, MonaVie relies on distributors to spread the information from the studies of the juice… it has to be a 100% sure that distributors are spreading this critically important information. According to Dallin Larsen itself it can’t be 100% sure as it is like herding cats. MonaVie can’t play both sides of the fense. People need one place to get the information… either or distributors. Neither one is complete at this time… and each points the finger at the other for the dificiency. This is another reason why this website provides a great service.]

    This entire blog topic is nothing but a scare tactic to make readers think that MonaVie has down-played or intentionally deceived consumers into a potentially health-damaging situation. If you would have consulted with your wife, the pharmacist, then she could have informed you that ANYONE who is started on Coumadin/Warfarin, regardless of their age, is required to receive proper education directly from a pharmacist, nurse, and/or physician prior to starting outpatient anti-coagulation medications. Therefore, ALL patients who are taking anti-coagulants should already be aware of the fact that they are supposed to regulate their Vitamin K intake (as well as certain other vitamins/nutrients/supplements/medications that may potentiate or negate the effects of that particular anti-coagulant, i.e. Coumadin/Warfarin). Therefore, your opening statement is misleading: “It isn’t common knowledge, but MonaVie can potentially be very harmful the elderly… those who are most likely on Warfarin/Coumadin.” On the contrary, for these elderly individuals on Coumadin, it should absolutely be common knowledge that fruit/vegetable products (which contain Vitamin K) may adversely effect their anti-coagulation status, and therefore their health.

    [Editor’s Note: I have consulted with my wife, the pharmacist. You are correct… it is the expectation that patients receive this education. However, there is a difference between expectation and reality. There is such a thing as human error.

    Beyond that, most pharmacists have never heard of MonaVie at all. Trust me, I’ve been to APhA and asked dozens of pharmacists. It isn’t reasonable to expect that pharmacists, nurses, and physicians educate people about every product available – especially juices since it is extremely rare that they contain a significant amount of vitamin K. Seriously, tell me some common juices on store shelves that contain the same vitamin K per ounce. You can say the blog post is a scare tactic, but this issue is well documented:

    You also comment that “One has to wonder what the researchers would conclude if they knew it was twice what they thought.” I’ll tell you what the author, who is a pharmacist by the way, would conclude…exactly the same thing he originally concluded: “Patients taking warfarin should be instructed to inform their health care providers when considering using MonaVie Active and, if they elect to use it, to maintain a consistent intake in line with the manufacturer’s recommendation.”

    Let me also point out a couple key points from the article that you neglected to cleary point out or draw together in your blog (for those readers who may not have actually linked-out to read the actual article): 1) Vitamin K is a common treatment for the reversal of Coumadin/Warfarin overdose, because it negates the effects of the anti-coagulant (I’ll spare you all the details of the mechanism of action), therefore it would make Coumadin LESS effective in its job of preventing clots. 2) Glucosamine and Omega-3 fatty acids are both believed to potentiate/enhance the anti-coagulant effects of Coumadin (again, I will spare the detailed MOA…mostly because their detailed actions are not fully understood by researchers), therefore they have the potential to make Coumadin MORE effective in preventing clots.
    It is these two opposing facts that allow the author of the article to make the statement that “The effect of vitamin K in MonaVie Active may be offset by its glucosamine and esterified fatty acids.” But then again I wouldn’t expect you to make these important points readily evident because that would detract from the intended scare tactic, and attempt once-again to discredit MonaVie for something that is not validated.

    [Editor’s Note: That is a fair point. My argument is two fold: 1) While it is a somewhat different topic, it is well-known that uppers and downers don’t play well together, so ingesting offseting chemicals isn’t necessarily a good thing. 2) Measuing INRs and keeping them consistent seems to be something that is of value to patients on warfarin and this obfuscates that balance.

    Botton line: Don’t put pressure on the patients, nurses, or doctors in this scenario… they aren’t experts in MonaVie and don’t know the threat that MonaVie presents. The people who are supposed to be experts on the product, those at the top levels, erroneous claim that it can prevent swine flu and that it is organic. Why would you debate me on this instead of joining me to be an advocate for consumers. I am trying to promote safety… did you not take a Hippocratic oath?]

    MV Scam, you are not a medical professional, and comments such as “It sounds to me that MonaVie’s statement of ‘MonaVie Active [is] very safe to consume’, is quite a stretch. They should probably play it safe and change their website to recommend that no one on Warfarin/Coumadmin consume the product at all” are way out of your realm of expertise. Maybe I should have the FDA look into some of your claims too. MonaVie is juice. Juice is safe for a vast majority of the population, so MonaVie’s claim that “MonaVie Active is very safe to consume” is absolutely justified

    [Editor’s Note: Please, please, please, have the FDA look into my claims. I would love nothing more than to speak with them. Honestly, it gives me butterflies thinking about sitting down and having a candid conversation about MonaVie with them. Has anyone ever gotten into trouble with the FDA for claiming that something may be unsafe?

    On the other hand, your claim of: “MonaVie is juice” and “juice is safe for the vast majority of the population”, so MonaVie’s claim that MonaVie Active is very safe to consume” is complete BS. As you know, there are medicines that should not be handled by women who are pregnant. It would be dishonest and dangerous for a company that makes those medicines to claim that it is very safe for them to be handled.]

    Why don’t you just suggest a list of foods that patients on Coumadin avoid all together, since you are playing the role of Coumadin educator here? Or here, I’ll provide some resources for you…

    [Editor’s Note: The first two links didn’t work for me. I’m not sure why. The third didn’t mention MonaVie at all. Since you claim that all patients have been educated about the issue I would expect you to point out the MonaVie reference in all of them. Finally, remember that this site isn’t about Warfarin/Coumadin interaction, but about MonaVie. It isn’t within the scope of this site to be a Coumadin educator… just a MonaVie one.]

    The bottom line is that any patient on outpatient anti-coagulation has been provided detailed written and verbal education on what foods to avoid, and/or how to use them in moderation to keep within specified limits of intake. With regards to most supplements, there just isn’t enough data to conclude whether they will have adverse effects on Coumadin/warfarin levels (and therefore INR/PT time), so the safest bet is for patients to avoid them all together. However, as a physician, if one of my patients was taking any MonaVie product and had a strong desire to continue doin so while on Coumadin/Warfarin, I would absolutely give them the go-ahead once their INR/PT was stable on a regular diet, and ensure that they were compliant with required follow-up in Coumadin clinic to monitor their INR/PT levels regularly…just as I would with any other patient that was eating a proper diet that incorporated fruits & vegetables.

    With regard to your last statement (and link, which I do not have the time to follow/read now): “I don’t see why a consumer who is on warfarin/Coumadin would spend a lot of money on this product especially WHEN IT LACKS NUTRITION.” You obviously have not looked at the MonaVie website since June (which is when I was introduced to the company/website), because there are Nutrition Facts readily available for each of the juice blends. I don’t think things have changed too much since I finished medical school, but last time I checked, if a food item contains calories, fats, carbohydrates, protein, and vitamins/minerals, then most people would count that as nutrition.

    [Editor’s Note: I don’t see the Nutrition Facts readily available, perhaps you can give me specific links to it? I’d like to mention that you didn’t refer to them either in your last post. Instead you pulled a bottle that you had handy, which didn’t match up with the nutrition facts from websites (MonaVie Distributors I might add) that I cited and referenced.

    Again, the posta made on this website are intended to be accurate at the time of posting. Considering that there are nearly 100 posts here, I can’t be expected to go back and correct them every time that MonaVie decides to change their policy… especially when they don’t inform me of the change. You are making an unreasonable request from me who volunteers his time to help others. Join my group of volunteers and spent your time making it right and I’ll be happy to have you on-board. I can grant you rights on this website to suggest changes. However, you need to earn that privilege. Your lack of understanding about the acai ORAC scores in your previous comment does not help you in this regard.]

    This ties into my response on your other blog, regarding the Dr. Schwarcz article. When I provided you with the Nutrition Facts for MonaVie Pulse, so I could demonstrate that it does in fact have MORE nutrition than an apple, you made a comment that basically admitted that you were unaware that updated Nutrition information for MonaVie products was available. This information has been available as long as I’ve known about the company (back in June of this year).

    [Editor’s Note: Again, I refer to the above. However, when I go to and click on the MonaVie Pulse product ( there is no nutritional information there where one would expect it. Perhaps it requires someone to click on an obscure link, but it isn’t obvious. And again, as I’ve said numerous times, you should not assume that MonaVie makes a change on their website and I react. As you know since you referenced my Lazy Man website MonaVie and I have had numerous discussions in the past. If they want me to make a change on my website they are welcome to request it. They haven’t yet, so it is their fault.]

    This tells me that you provide all of this anti-MonaVie sentiment on your blogs without even staying up-to-date on their forward progress. If this site is truely designed to educate potential MonaVie prospects, and allow them to make an educated adult decision, then why not give MonaVie credit for the steps they are taking to improve their products (both new and old), distributors, and company as a whole?

    [Editor’s Note: Again, it is hard to say that there is any “forward progress”, they haven’t delived a 100% juice product at the price of the 100% V8 Fusion ($3-4 for 46 ounces). When they improve their product and pricing to match competitor, we can revisit this discussion.

    As of now the main points haven’t changed, so there’s little need to update the articles. However, if you feel the need to suggest specific changes, please hit the “contact” link in the header and suggest them. We don’t need to bring more noise to this unorganized conversation. (Did you not see my request about posting comment to their respective posts?!?!)]

    As I’ve acknowledged before about MonaVie…the research, pricing, choice in scientific support speakers, and claims of some distributors are by no means perfect.

    [Editor’s Note: It is hard to take this statement seriously. You could just as well say that the plan of people crashing airplanes into skyscrapers is not perfect. Yes I’m making an extremely point. However, it shows that there is a huge difference between “not perfect” and harmful.]

    However, there is great opportunity for leadership development of distributors, and the executive members are well-respected entrepreneurs in their field of business (MLM). However, there is great opportunity for leadership development of distributors, and the executive members are well-respected entrepreneurs in their field of business (MLM).

    [Editor’s Note: Umm, as you mentioned before the executive members don’t know the product… I’m going to give you failing grade on that one. As for the opportunity, it has been proven numerous times that it is a bad opportunity. In fact, to this date (please don’t respond back in a month and claim the contrary) MonaVie hasn’t updated their 2008 Canadian Income Disclosure Statement or their mid 2009 Global one – I’ve shown objective data that interest in MonaVis is fading –

    Please make a case about the executive members who are well-respected entreprenuers in MLM. Give me names and I think I think I can make strong case that they are not. I can also make case that most (maybe all) did not grow their business in MonaVie. Almost everyone I’ve looked up has brought their downline from Amway or another MLM. That shows me these people aren’t interested in the product, but the business “opportunity”.]

    You make such a big deal about people getting scammed into this business and spending hundreds and thousands of dollars to end up back where they started. While I will acknowledge that this is unfortunate, we are all adults and are capable of making our own decisions. Yes, distributors are affliliated with MonaVie because that is the product that are consuming/marketing, but the bottom line is that each distributor is responsible for building THEIR OWN BUSINESS with their team. It is the responsibility of each distributor to invite the people they know and respect the most to join their business team, and then they are responsible for helping them develop leadership skills necessary to build their own team. I’d be willing to bet that the distributors with the most ethics, and those that are truly in this business for what it was intented (to spread the message of health/ wellness, and provide a financial means to support such a lifestyle), will be the most staisfied/successful in the long-run. I’m confident that MonaVie will be around for years to come, just as Amway, Avon, etc. are still around. They have just barely begun to tap into the U.S. market, let alone the international market.

    [Editor’s Note: You are completely right that people are capable of making their own decisions. However, there are times when people are presented with inaccurate information. You are guilty of this with your previous comment about the ORAC score of acai. This needs be corrected. That’s why this website exists. It is about showing the accurate information such as an apple looking to be more nutritious than 9 ounces of MonaVie instead of MonaVie claiming that 4 ounces is somewhat like 5-13 fruits. It’s about honesty and I’d appreaciate it if you’d join my side and spread the truth to help consumers make better decisions instead of being scammed.

    It is bold of you to “be willing to bet that the distributors with the most ethics, and those that are truly in this business for what it was intented (to spread the message of health/ wellness, and provide a financial means to support such a lifestyle), will be the most staisfied/successful in the long-run.” However, I’ve already shown that to be invalid with Mitch Biggs making numerous illegal claims and have zero ethics. I’ve conclusively shown that Orrin Woodward lies and scams people as well

    I hope that your website does disuade certain individuals from joining MonaVie…

    [Editor’s Note: Thanks for agree with me. I appreciate the support.]

    … such as 1) those individuals with hatred in their hearts,

    [Editor’s Note: This is a common comment from MonaVie distributors. You are a person with hatred in your heart. You openly recognize the products shortcomings and yet you still support it.

    2) those who are looking for a way to get rich quick (and are willing to lie to others to gain profit)

    [Editor’s Note: I have shown a number of people who are willing to lie. Remember, there shouldn’t be any people willing to lie to gain profit in MonaVie… it is MonaVie’s job to prevent such people from becoming distributors.]

    3) those who are not willing to acknowledge the fact that this IS A BUSINESS, and just like any other business, you have to be willing to make investments…in the form of time, money, and risks. Just about any successful entrepreneur would vouch that in order to make a successful business, you must take risks, and you must associate with respectable people. I can guarantee that the MonaVie people/team that my friends work with are very ethical and go to great lengths to not pressure others into this business unless they are fully committed and aware of the risks/investment necessary to succeed.

    [Editor’s Note: I have shown, mathematically, that is a bad business to be in. Many other people guaranteed that “MonaVie people/team that my friends work with are very ethical” and it turns out to not be the case. When those people end up homeless (as one commenter mentioned), those MonaVie/Team people disappear. A good way to judge their friendship? Stop buying MonaVie from them for a year and see if they come by for poker nights.]


    Please quantify the minority. It is enough that the CEO mentioned it in the Newsweek article. There was a whole website, Purple Horror, with thousands of individuals making complaints before it got whitewashed.

    I have never been to a MonaVie meeting where any of the statements that you constantly quote were made (i.e. you will not have to eat fruits anymore, MonaVie is the same as 13 servings of fruit, MonaVie will cure your Autism…or any other ailment, you are guaranteed to become rich, MonaVie Mmun will prevent you from getting the flu, etc.).

    Just because you haven’t been to those meetings doesn’t mean they didn’t happen. On my Lazy Man and Money post, which you said you were familiar with, there are numerous references. There are numerous references here as well. However just do a simple Google search for “Monavie Autism” and you’ll see what distributors are claiming out in the open on the Internet. One can only imagine what they say behind closed doors. Plus, we have Mitch Biggs claiming that MonaVie is good for swine flu… Mitch Biggs Claims MonaVie Prevents Swine Flu.

    Just FYI, the local group here follows the R3Global system, and although I have heard of the other systems (i.e. TEAM, Legacy, etc.), I know nothing about the differences between each, and/or how that factors into the teaching of various distributors, and/or whether that palys a role in their team knowledge/ethics.

    Again, I am sorry to be so long-winded, and occasionally off-topic from the initial post. However, I do not have the time or energy to read and comment on each of your individual posts. It would be nice if your blog was more organized by topics (i.e. Nutrition, Science, Leadership, MORE Project, Legal issues, distributor Claims, Personal Drama, etc.). See I’m trying to help you be less biased, and more user-friendly for your readers. Maybe I’ll start my own website…or maybe my idea has already been implemented eslewhere…

    [Editor’s Note: It would be much appreciated if you’d leave the appropriate comments on the appropriate posts. For instance there is a post devoted to the Vitamin K issue, and you leave your comment on this post. You can’t complain about poor organization while you are contributing to the poor organizations. I thought my requirements about leaving a comment were abundantly clear. My blog is nicely organized by topics… see the left column that says “Categories.” Also see the top that says “Archives.” Or visit the home page of the site where I categorize many of the posts.]

    Final thoughts: It is extremely interesting that Beatrice spent at least 50% of her comment complaining (and failing) about Vitamin K. She didn’t address much of the previous topics in her last post.

    I guess she admits that her post about acai ORAC scores was fraudulent. There was no comment on the MORE Project either. It is also interesting that at no point does she debate my idea about putting it for sale on store shelves. MonaVie has refused the same… wonder why…

    It was noted a little more than a month ago that MonaVie was looking for a research scientist/spin doctor… see the post here. It is interesting that the job posting is expired and Beatrice seems to be exactly the person they were looking for… someone to claim to be a physician and play a public relations role.

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