Do grapes interfere with warfarin?

Asked By: Simonne Dorwig | Last Updated: 7th March, 2020
Category: healthy living nutrition
4.9/5 (769 Views . 40 Votes)
Taking phenacetin along with grape juice might decrease the effectiveness of phenacetin. Grape seed might also slow blood clotting. Taking grape seed along with warfarin (Coumadin) might increase the chances of bruising and bleeding. Be sure to have your blood checked regularly.

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Besides, are grapes high in vitamin K?

Nutrient profile They provide significant benefits for people who eat plant foods. "Grapes are also a good source of vitamin K, copper and many of the B vitamins," said Rumsey, adding that they are also a good source of fiber and relatively low in calories.

Also, what foods should you avoid if you are on blood thinners? Cardiologists report that one of the most common interactions occurs between the blood thinner warfarin (Coumadin®) and foods high in vitamin K, which the body uses to clot blood.

These foods include:

  • Asparagus.
  • Broccoli.
  • Brussels sprouts.
  • Cauliflower.
  • Green onions.
  • Kale.
  • Parsley.
  • Spinach.

Secondly, are grapes blood thinners?

Anticoagulants (blood thinners): Grape seed extract may act as a blood thinner, and could increase the risk of bleeding if taken with other blood thinners such as warfarin (Coumadin), clopidogrel (Plavix), or aspirin.

What vitamins should be avoided when on blood thinners?

Examples of supplements which may reduce warfarin's ability to thin the blood include vitamin K, ginseng, St. John's wort, and, in very high doses, green tea. CoQ10 is chemically similar to vitamin K2 and may also decrease the effects of warfarin, although the evidence for this is mixed.

39 Related Question Answers Found

What is a dangerous INR level?

If an INR score is too low, a patient can be at risk for a blood clot. However, if the INR is too high, patients could also experience bleeding. A typical INR score ranges between 2 to 3. The “ideal” INR score can vary from patient to patient.

Do eggs have a lot of vitamin K?

10 Dairy Foods and Eggs High in Vitamin K
Dairy foods and eggs are decent sources of vitamin K2. Just like meat, their vitamin content depends on the animal's diet, and values vary by region or producer.

Is eating too many grapes bad for you?

Grapes are delicious and easy to eat but be aware of your serving size. If you eat too many in one sitting, the calories and carbs will add up fast. This may negate any health benefits and increase your risk of weight gain. Dehydrated fruits like raisins should be eaten in moderation.

What foods thicken your blood?

Blood-thinning foods, drinks, and supplements
  • Turmeric.
  • Ginger.
  • Cayenne peppers.
  • Vitamin E.
  • Garlic.
  • Cassia cinnamon.
  • Ginkgo biloba.
  • Grape seed extract.

Can you eat bananas while taking warfarin?


If you are a patient on warfarin, wondering whether it's on your list of foods you can eat without worry shouldn't make you crazy. Whether you are boiling them or frying them, green bananas contain much higher vitamin K than yellow bananas because the skins are often eaten. So, go bananas!

Is cheese high in vitamin K?

There are multiple forms of vitamin K. The total vitamin K content of blue cheese, fresh cheese, soft-ripened cheese and semi-soft cheese was 439±129, 309±204, 495±214 and 310±126 μg/100 g, respectively. Non-fermented cheeses, like processed cheese, contained lower amounts of vitamin K (90.9±37.9 μg /100 g).

Can I eat iceberg lettuce while taking warfarin?

Iceberg lettuce is low and romaine is also fairly low, so most people can eat either if them daily. In addition, be sure to read labels on multivitamins as they have varying amounts of vitamin K. Talk to your doctor about what vitamins you should take.

Are carrots high in vitamin K?

Carrots are high in: Vitamin A (Beta-carotene) Vitamin K. Calcium.

What vegetables thicken your blood?

Green leafy vegetables, such lettuce and spinach, and other vegetables such as broccoli and brussels sprouts are high in vitamin K.

Do blood thinners make you tired?


Aside from bleeding-related issues, there are several side effects that have been linked to blood thinners, such as nausea and low counts of cells in your blood. Low blood cell count can cause fatigue, weakness, dizziness and shortness of breath. Be careful mixing medications.

Do onions thin your blood?

Cooked or raw, garlic and onions may help ward off heart disease. There is evidence that these two allium vegetables tend to "thin the blood," discouraging blood clots that trigger heart attacks and strokes. If so, only raw onions and garlic would work.

Does salt thicken your blood?

Eating salt raises the amount of sodium in your bloodstream and wrecks the delicate balance, reducing the ability of your kidneys to remove the water. The result is a higher blood pressure due to the extra fluid and extra strain on the delicate blood vessels leading to the kidneys.

Is chocolate a blood thinner?

Researchers from Johns Hopkins University have found that chocolate thins blood and protects the heart in the same way as aspirin. The key is a compound in chocolate called flavanol, which slows down platelet clumping that can block off blood vessels and lead to a heart attack or stroke.

What is the safest blood thinner for AFIB?

Warfarin or newer blood thinners such as rivaroxaban or dabigatran are effective for preventing strokes in patients with atrial fibrillation. They actually slow or stop clot formation, so are more “anti-clotting” drugs, even though they are known as blood thinners.

Can Drinking Water thin your blood?


What about drinking 10–12 glasses of water a day as a blood thinner method? That's a lot of water. While it could certainly make blood less viscous, its effect on the heart isn't known (though its effect on the kidneys certainly is!).

Do grapes affect warfarin?

Taking phenacetin along with grape juice might decrease the effectiveness of phenacetin. Grape seed might also slow blood clotting. Taking grape seed along with warfarin (Coumadin) might increase the chances of bruising and bleeding. Be sure to have your blood checked regularly.

Which blood thinner is the safest?

Both types of blood thinners are effective. Warfarin reduces the risk of strokes by about 65%. Clinical trials suggest the newer blood thinners are as effective, if not more so, than warfarin and far safer with respect to serious bleeding.