How to Follow a Warfarin Diet [Made Easy]
Curious how to follow a warfarin diet? Perhaps you have been told you need to eat a certain way when on warfarin, but it just seems so confusing? Or maybe you feel (or have even been told) you can never eat greens again?!
A warfarin diet can be so confusing. The goal of this article is to teach you how to follow a warfarin diet. And most importantly, we want to make a warfarin diet easy to understand.
Disclaimer: This article is informational only and is not intended to be medical advice. Always talk to you doctor about changes to your diet. Your individual situation is unique and may have special needs.
What is Warfarin
Warfarin is a type of medication taken to prevent blood clots for certain people with an increased risk for clots (ex. history of heart attack or stroke, pulmonary embolism, irregular heartbeat, etc).
You may also hear Warfarin called Coumadin® or “blood thinners”. Coumadin® is the name brand of Warfarin. Lower cost, generic options are available as well.
“Blood thinners” is the name typically given to the medication class of anticoagulants. “Coagulants” refers to forming a clot. “Anti” means opposed to or against. So, anticoagulants help to stop clots from forming.
Broken down very simply, Warfarin acts to “thin” blood to prevent clots. Of course, this it’s more complicated than this, but this is an easy way to understand how this medication is working.
Types of Blood Thinners
There are several different types of blood thinners.
Common types of blood thinners include:
- Warfarin (Coumadin®)
- Apixaban (Eliquis)
- Rivaroxaban (Xarelto)
- Dabigatran (Pradaxa)
- Edoxaban (Savaysa)
Your healthcare team helps to determine which blood thinner is the best for you. This is based on your health history, diagnosis, and individual situation.
Warfarin and Your Healthcare Team
You are likely on Warfarin because it is the medication your healthcare team has determined is best for you. You can always ask your healthcare team about other blood thinner options if needed. They will help you make choices based on your individual situation.
When on warfarin, it is incredibly important to work closely with your healthcare team. You will need to go in for regular blood tests to see how well the medications are working. And to make changes to your medication doses as needed.
What is a Warfarin Diet
Changes to diet (the way you eat) and other factors can contribute to the need to change your warfarin dosage. Consistency is a word you are going to hear a lot in this article. Because when it comes to warfarin and your diet, consistency is key.
We are going to breakdown how warfarin and your diet interact in an oversimplified manner. Keep in mind these processes are much more complex, this is just an easy way to help you better understand your warfarin diet.
Warfarin and Vitamin K
The most important nutrient to consider when following a warfarin diet is Vitamin K. Warfarin helps prevent blood clots. While Vitamin K helps blood to clot.
If we think of Warfarin as a “blood thinner”, we can think of vitamin K as a “blood thickener”. Scientifically, this is not exactly how it works. But it’s a good way to think of the relationship between warfarin and vitamin K.
Consistency is Key
In some ways, warfarin and vitamin K are working against each other, so consistency is key.
What does consistency mean? It just means make sure you are eating the same amounts of foods high in vitamin K on a daily and weekly basis.
You don’t want to be eating a large amount of vitamin K everyday then suddenly stop. On the same hand, you don’t want to suddenly start eating a large amount of vitamin K.
For example, if you drink a green smoothie high in vitamin K every day, then suddenly stop. Or you suddenly start taking a new multivitamin and nutrition drink (both of which contain vitamin K) to get some extra nutrition in your diet.
Any changes to vitamin K intake in your diet should be done gradually. And in conjunction with a conversation with your healthcare team.
Benefits of vitamin K
Vitamin K, like all nutrients, is important for our health.
To simply avoid vitamin K can lead to health issues including:
- vitamin K deficiency
- increased risk of bruising
- bleeding problems
- bone issues including a higher risk of osteoporosis
Vitamin K plays an important role in helping our blood to clot (this is important if you ever have a cut or scratch!), bone health, and other cellular functions in the body.
Men ages 19 years and older need 120 mcg of vitamin K daily. And women ages 19 years and older need 90 mcg of vitamin K daily.
Warfarin, Diet, and Safety
Because warfarin and vitamin K are working against each other, big changes to your diet can cause serious health issues. Or at least put you at increased risk for “bleeding out”.
While none of us expect to get injured, accidents happen. A simple fall, a car crash, or any type of accident can happen to any of us at any time.
If your blood is too “thin” this can cause a significant health risk. You can experience internal bleeding that is unseen. Or struggle to get a cut to stop bleeding.
Warfarin is an important, but very serious medication to be taking. It can cause severe bleeding or even death. Anyone on warfarin should be working closely with their healthcare team and getting regular lab work done to determine if medication adjustments are needed.
Remember that with a warfarin diet, consistency is key. Keep in mind that both food and supplements can cause issues.
How to Follow a Warfarin Diet
Following a warfarin diet isn’t as complicated as it seems. You can do this!
Foods You Can Eat on a Warfarin Diet
Pretty much any food without a significant source of vitamin K is fair game when following a warfarin diet. Here is a basic list of foods you can eat on a warfarin diet. Keep in mind, you may have other dietary restrictions based on your individual medical conditions.
Foods you can eat on a warfarin diet:
- Meat, fish, eggs
- Milk, cheese, yogurt
- Grains, bread, rice, pasta
- Fruits of any type
- Red, orange, yellow vegetables
- Most purple and white vegetables
Reading the food label may or may not be beneficial when looking for vitamin K. Vitamin K is not a nutrient that is required to be on the food label. However, brands that add a lot of vitamins and minerals to a food product will often list all of those nutrients voluntarily.
You can also look at the food ingredient list. Look for ingredients high in vitamin K (listed later in this article) or supplemental vitamin K.
Foods to Watch on a Warfarin Diet
You may notice we said food foods to “watch” and not foods to “avoid”. These foods are ones that are high in vitamin K. Remember, vitamin K is good for you. It does a lot of important stuff in the body!
There really aren’t any foods you have to completely avoid. But if you choose to eat these foods (foods high in vitamin K), you need to make sure you are eating reasonable amounts and are consistently eating them.
For example, if you have a ½ cup serving of green vegetables for dinner every night, that is perfectly fine. Suddenly binging on a ton of green smoothies over the weekend would not be the best idea.
Foods high vitamin K:
- Soy oil
- Swiss chard
- Collard greens
- Canola oil
- Soy beans
- Brussels sprouts
- Dark lettuce
- Dill pickles
- Green smoothies
- Some nutrition drinks
While vitamin K is found in a lot of foods naturally, it is also found in nutrition drinks and vitamins. Be sure to read the nutrition label on vitamins, protein drinks, and nutrition drinks to see if they contain vitamin K.
Supplements to Avoid on a Warfarin Diet
In addition to foods, there are certain supplements you should watch out for. These are supplements you should probably avoid all together.
Always be sure to tell your healthcare team about supplements you are taking. And ask your healthcare team before start any new supplements.
Supplements to avoid on warfarin:
- John’s wort
- Coenzyme Q10
If you are already taking these supplements, please do not stop without first speaking to your healthcare team.
In addition to supplements, be sure to talk to your healthcare team about use of alcohol.
Other Tips for a Warfarin Diet
Here are some additional tips for staying healthy on a warfarin diet.
Eat a Balanced Diet
Sometimes people on warfarin believe they cannot have any foods high in vitamin K. Hopefully by now you realize it’s all about consistency. You still need vitamin K for a healthy diet.
Some people who struggle to eat a balanced diet find that a daily multivitamin can be beneficial. We always recommend food first, but recognize the important role of multivitamin supplements.
Every nutrient is important for health. This is why you always hear healthcare professionals promote a balanced diet. A balanced diet contains a variety of different foods and types of nutrients.
Foods to eat daily:
- Calcium sources (dairy or non-dairy)
- Protein (animal or plant based)
- Whole grains
In addition to eating a balanced diet, be sure to drink plenty of water to stay well hydrated.
Avoid Big Changes
I know we’ve repeated this multiple times already, but be sure to avoid big changes in your diet. This includes starting new supplements and drinking large amounts of alcohol. This can cause serious issues.
Work With Your Healthcare Team
And finally, always be sure to work with your healthcare team. Get regular blood tests as advised. Notify your healthcare team of any new medications, supplements, or changes to your diet.
Warfarin Diet Conclusion
Following a warfarin diet doesn’t have to be hard. You just need to learn what foods are high in vitamin K and be sure to consume those foods in consistent amounts. Be aware of supplements to avoid. And always work closely with your healthcare team.
If you are interested in additional resources, check out our Warfarin Diet BUNDLE which includes a printable handout and e-book version of this article.
- Medline Plus website. https://medlineplus.gov/druginfo/meds/a682277.html
- Types of Heart Medications. American Heart Association website. https://www.heart.org/en/health-topics/heart-attack/treatment-of-a-heart-attack/cardiac-medications
- Vitamin K Fact Sheet for Consumers. National Institutes of Health website. https://ods.od.nih.gov/factsheets/VitaminK-Consumer/