Active Ingredient(s): Warfarin
FDA Approved: * June 8, 1954
Category: Blood Thinner (Anticoagulant)

* This drug may consist of multiple approval dates, manufacturers, or distributors. If applicable, they would be listed below under "NDC Database Records".

Coumadin Overview

Warfarin, also known by the brand names Coumadin among others, is an anticoagulant normally used in the prevention of thrombosis and thromboembolism, the formation of blood clots in the blood vessels and their migration elsewhere in the body, respectively. It was initially introduced in 1948 as a pesticide against rats and mice, and is still used for this purpose, although more potent poisons such as brodifacoum have since been developed. In the early 1950s, warfarin was found to be effective...

Read more Coumadin Details
Details May Include Instructions, Side Effects, Interactions, Etc. Drug monograph is from Wikipedia. All text is available under the terms of the GFDL (GNU Free Documentation License). Source:

Recent Coumadin Forums: RSS Feed

Warfarin (Coumadin) and PT-INR levels
10 Replies RSS
I am 19 years old and have had 4 blood clots so far due to a birth control pill. I have to go every week and get my INR levels checked. Right now I am taking 4 mg on even days and 5 mg on odd days. My levels go from 1.7 to 4.4 to 3.8 to 2.4. I really dont like going every week to get my finger poked, especially at my age. Is there a recommendation that anyone can give me, like a different blood thinner, that I can talk to my doctor about? Or just any advice will help. Thanks ## Hi Julie, I'm sorry to hear about your situation, that sounds rough. I don't have any experience with blood thinners so unfortunately I can't recommend any new ones to you, but according to live, there are foods that act as natural blood thinners. Maybe you incorporate some of these foods i...
Updated 2 hours ago.
PT level 1.5 Dr. Lowering dosage
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My doctor wants me to stop dosage for 2 days and my level is 1.5 is this not dangerous I have history of stroke and a mechanical mitral valve. I have been on this since I was 12 years old and I am 44 now.
Updated 7 days ago.
I believe coumadin lowers my mood and confidence.
3 Replies RSS
I am an active 41 yr old male who has been on coumadin for 9 years and now believe it lowers my mood and confidence. I originally believed my changes in mood and confidence were associated with my open heart surgery to replace my aortic valve and the life changes and trauma one would expect after such an event at 32 yrs old. But recently i was allowed to come off coumadin for a little over a week to have a back surgery. My INR was normal after 3 days giving me 5 days with my normal blood again. My confidence about the surgery, myself and outlook on life and my business changed enough for me to notice reminding me of how i felt before open heart surgery. Solid is the word i would use. The morning after returning to take coumadin again, a couple days after back surgery, i woke up with a f...
Updated 20 days ago.
Lightheadedness and dizziness with taking coumadin
2 Replies RSS
Has anyone else gotten Lightheadedness and dizziness from Coumadin. I have been told this doesn't happen and I would be the first. My Coumadin therapist has never heard this. I don't believe that ## I find it hard to believe your therapist too, since there are a good number of webpages listing: headache, dizziness, weakness, fainting, nausea, and even flu-like symptoms as side effects of Coumadin (warfarin). All your therapist had to do was google "Coumadin side effects" and he would've known this to be the case. Here's one of many side-effect listings that show what symptoms you're describing: I have to wonder if he's really lying or simply doesn't know how to use the internet. In any case, I hope t...
Updated 1 month ago.
vitamin k equivalents
1 Reply RSS
I've kept my coumadin levels very steady because I eat the same thing every day, one half of a bag of prewashed lettuce. Depending on the kind, the bags are normally 7or 9 ounces. The thing is I'm getting tired of it. So without changing my coumadin, how much fresh green beans or canned green beans should I eat? And is there a good place to find these answers? ## Hello, Robert! How are you? What type of lettuce? Not all of it is high in vitamin K, for instance iceberg lettuce is actually very low in it. However, you should also be okay with green beans, because they are also listed as being very low in it. A search for vitamin k levels in foods will turn up several websites that list the information for you, all are free to access. The FDA classifies Coumadin as a blood thinner ...
Updated 5 months ago.
coumadin and cranberry
1 Reply RSS
Getting conflicting info on cranberry juice or AZO tablets and Coumadin. Don't want my 83 yr. old mother to get another UTI. Just got out of hospital from having one. Can't decided if it's ok to give her cranberry juice while taking Warfarin. ## So far, clinical studies have shown no danger in consuming cranberry products, while taking Warfarin, but it's always best to double check with one's doctor to be sure. The FDA classifies Coumadin as a blood thinner and its typical side effects may include nausea, dizziness, headache, increased risk of bleeding and easy bruising. Is there anything else I can help with?
Updated 5 months ago.
Coumadin minimum daily k and diet
2 Replies RSS
Diets and restrictions seem to be all over the place. My feeling on Coumadin, is to keep my vitamin K level on the low side, because I'm not a consistent eater. I cannot rely on a consistent level of higher K. So I'm thinking a lower daily input of K means less change/difference because of a non-consistent diet. So far it's worked, I'm right where I need to be, my IRN(?), is steady. Well, my sister is all over my back, because I won't eat Blueberries or Spinach (I like both but seldom eat either) ... same goes with a few other foods. My doctor, has told me that I can eat all the green beans I want and I related this to my sister that he said green beans were almost a "freebie", no need to control amount. Well, my sister is certain that I'm going to kill m...
Updated 5 months ago.
RSD and Itching - 80 on one side and other
1 Reply RSS
Hi, I have had Avascular Necrosis, and Reflex Sympathetic Dystrophy (stage 4). I have implanted Pain pump that infuses the medication directly into the Spinal Fluid. Over the past several years, I developed extremely "violent" itching. This itching leads to bruising in very large areas. I am also on Coumadin, currently 3mgs a day. I had two bouts with BiPulmonary Embolism(s) back in 1995-1996. I have been prescribed Atarax, Benedryl, and Allegra; all for this itching. I have used virtually OTC cream, spray, and additional Benedryl when I "flare up. This itch is driving me NUTS, and has gone through the same frustration of everything NOT working. I do have a "laundry list" of Meds, as well, other Medical problems that were diagnosed after my knee surgery. I need someo...
Updated 6 months ago.
INR Decreeases With Excercise
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Hello, I'm a 24 year old male and I'm one of those whose INR drops when I excercise. I am currently running 3 miles 5 times a week. I'm taking ten MGs of Coumadin every day except for Wednesday, I then take 12 MGs. I've been in range with this dosage. I had read among some other posts, and people seem to think that your INR drops with exercise because since your heart rate revs up with exercise, the Coumadin is then metabolized quicker and not fully absorbed by your body. If that is true, here is my question: I know Coumadin takes about 24 hours for your body to fully absorb it and for it to affect your INR, which is why I try to exercise around 4 PM so the Coumadin that I took the evening before has had nearly 24 hours to work its magic since I take my Coumadin at 5 PM eve
Updated 6 months ago.
My Father Died from Coumadin
8 Replies RSS
My father was on Coumadin. One day he hit his head. If it were not for Coumadin, the small bump on his head would have amounted to nothing unusual. However, the Coumadin resulted in a cerebral hemorraghe. Even though he had been takikng Coumadin exactly as prescribed and had gone for each of his INR checks, when he got to the hospital, the doctors found his INR was off the richter scale. To relieve the pressure on his brain from the hemorraghe, they needed to operate. But they couldn't because his INR level was too high. They said it would take 24 hours to reduce his INR to a level at which they could operate. By that time, he was dead. Subsequently, the doctors wanted to put me on Coumadin for a year. I said no. They insisted and finally said you have to go on Coumadin for at least...
Updated 6 months ago.

Possible Dosages for this and Related Drugs:

  • Injection: 50mg/vial, 5mg, 5mg/vial, 75mg/vial
  • Tablet: 10mg, 1mg, 2.5mg, 2mg, 3mg, 4mg, 5mg, 6mg, 7.5mg
Note: Above list includes dosages for all drugs with the same combination of active ingredients.

NDC Database Records for Coumadin: (52 results)

Showing the first 20, Sorted by National Drug Code
  • 0056-0168 Coumadin 4 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0169 Coumadin 1 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0170 Coumadin 2 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0172 Coumadin 5 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0173 Coumadin 7.5 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0174 Coumadin 10 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0176 Coumadin 2.5 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0188 Coumadin 3 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0056-0189 Coumadin 6 mg Oral Tablet by Bristol-myers Squibb Pharma Company
  • 0590-0324 Coumadin 2 mg/ml Intravenous Injection, Powder, Lyophilized, for Solution by Bristol-myers Squibb Holdings Pharma, Ltd. Liability Company
  • 43353-491 Coumadin 10 mg Oral Tablet by Aphena Pharma Solutions - Tennessee, Inc.
  • 43353-492 Coumadin 3 mg Oral Tablet by Aphena Pharma Solutions - Tennessee, Inc.
  • 43353-493 Coumadin 1 mg Oral Tablet by Aphena Pharma Solutions - Tennessee, Inc.
  • 43353-494 Coumadin 7.5 mg Oral Tablet by Aphena Pharma Solutions - Tennessee, Inc.
  • 49999-411 Coumadin 2.5 mg Oral Tablet by Lake Erie Medical & Surgical Supply Dba Quality Care Products LLC
  • 50090-0028 Coumadin 5 mg Oral Tablet by A-s Medication Solutions LLC
  • 52125-053 Coumadin 3 mg Oral Tablet by Remedyrepack Inc.
  • 52125-075 Coumadin 7.5 mg Oral Tablet by Remedyrepack Inc.
  • 52125-079 Coumadin 10 mg Oral Tablet by Remedyrepack Inc.
  • 52125-080 Coumadin 5 mg Oral Tablet by Remedyrepack Inc.
  • 32 more results ...

Other drugs which contain Warfarin or a similar ingredient: (3 results)

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Coumadin Ingredients what ingredients are in coumadin? what ingredients are warfarin? ## @mike, To answer your question, Coumadin actually co... 3 replies
coumadin and aspirin what are the differences of taking coumadin or aspirin to prevent blood clots ## Coumadin is a much stronger and more re... 3 replies
Coumadin Side Effects My mother began taking Coumadin 2 wks ago. Her INR was 1.9 today, so it's progressing well toward a therapeutic leve... 2 replies
Coumadin minimum daily k and diet Diets and restrictions seem to be all over the place. My feeling on Coumadin, is to keep my vitamin K level on the low s... 2 replies
coumadin and secere headaches i am TAKING COUMADIN for one time small DVT and have had SEVERE HEADACHES! my doctor only cares about that INR Levels; a... 2 replies