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Buy Coumadin Online in Canada

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Manufacturer name:  

Bristol-Myers Squibb

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1MG, 2MG, 2.5MG, 3MG, 4MG, 5MG, 6MG, 7.5MG, 10MG

What is Coumadin?

Coumadin (Warfarin) belongs to the class of medications called anticoagulants. It is sometimes referred to as a "blood thinner," although it does not actually thin the blood.

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Coumadin frequently asked questions

How To Buy Coumadin Online?

You can buy Coumadin online at Pocketpills if you already have a valid prescription from your doctor. You can get started by uploading your prescription, ordering a refill by transferring any existing medications to our pharmacy or talking to one of our Canadian Doctors to get an online prescription. Get started now!

How To Get a Prescription for Coumadin?

You can consult a Canadian doctor online at Our physicians can prescribe medications online during your consultation. Once you receive a prescription, you'll have the option to have it delivered to your door in discreet packaging and at no additional cost!. Click here to get an online prescription today!

Can I Get Same-Day Delivery?

Yes! We do provide same-day delivery in select areas. We do next business day delivery and can also ship overnight as well.

How Much is Shipping Cost for Coumadin in Canada?

Shipping cost for Coumadin to you in Canada is zero. Pocketpills offers FREE shipping anywhere in Canada to help you get access to treatment.

How to get Coumadin delivered to my home?

You could get Coumadin delivered at your doorstep from us in Canada if you ordered prescription medications with a valid prescription. If you are not sure if we deliver to your area, contact us.

How to get Coumadin in Canada for free?

You can get Coumadin for free in Canada if your health insurance provider covers it fully. Contact your provider or us to help you find out if you qualify to get Coumadin for free.

Can I consult a doctor online to get Coumadin?

Yes. You can book a consultation online with a Canadian doctor here with us at Pocketpills to see if you qualify for a prescription to order Coumadin.

Can I buy Coumadin without a prescription?

You need a valid prescription to buy Coumadin from us. Contact us if you need a prescription. One of our doctors can give you a telephone call at your convenience.

Coumadin How to Take

Coumadin (Warfarin) belongs to the class of medications called anticoagulants. It is sometimes referred to as a "blood thinner," although it does not actually thin the blood.

Coumadin (Warfarin) helps to prevent Blood Clots from forming or from getting bigger, but it does not dissolve blood clots. Coumadin (Warfarin) is used for the treatment of blood clots in the veins, arteries, lungs, and heart. It is also used to prevent clots for people with conditions that put them at an increased risk of developing blood clots (e.g., some abnormal heart rhythms [atrial fibrillation], leg circulation problems, Heart Attack or Congestive Heart Failure). It is also used to reduce the risk of blood clots due to surgical procedures or trauma.

Blood clots in the circulation are dangerous because they can cause medical problems such as heart attacks, Stroke, and pulmonary Embolism. Coumadin (Warfarin) helps to reduce blood clotting within 24 hours of taking the medication. The full effect may take 72 to 96 hours to occur.

Coumadin (Warfarin) works by partially blocking the reuse of vitamin K in your liver. Vitamin K is needed to make clotting factors that help the blood to clot and prevent bleeding. Vitamin K is found naturally in foods such as leafy, green vegetables, and certain vegetable oils. If you are taking Coumadin (Warfarin), you may continue to eat these foods, but do not make any drastic changes to your diet.

Coumadin (Warfarin) may be available under multiple brand names and/or in several different forms. Any specific brand name of Coumadin (Warfarin) may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of Coumadin (Warfarin) may not be used for all of the conditions discussed here.

Your doctor may have suggested Coumadin (Warfarin) for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking Coumadin (Warfarin), speak to your doctor. Do not stop taking Coumadin (Warfarin) without consulting your doctor.

Do not give Coumadin (Warfarin) to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take Coumadin (Warfarin) if their doctor has not prescribed it.


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Your privacy is important. That's why we send your medication inside a plain delivery box so no one will know what's inside.

Coumadin Dosage

The dose of Coumadin (Warfarin) is individualized by your doctor according to blood clotting time. Blood clotting time is determined by a laboratory test, called an INR, which should be performed at regular intervals. It is very important to keep your lab appointments, as there is a narrow range between too much and too little of the medication. Too much medication may cause you to bleed more. Too little medication may lead to harmful clots forming.

Different circumstances in your life (e.g., eating certain foods or using certain medications) can cause the medication to work more or less effectively. Ask your doctor or pharmacist for a list of these foods and medications.

It is important to manage your lifestyle and habits appropriately when taking Coumadin (Warfarin):

  • do not make drastic changes in your diet, such as eating large amounts of green, leafy vegetables
  • do not attempt to change your weight by dieting without first checking with your doctor or pharmacist
  • do not participate in any activity or sport that may result in serious injury
  • avoid drinking alcohol
  • avoid drinking cranberry juice or consuming other products that contain cranberries
  • avoid cutting yourself

It is very important that you take Coumadin (Warfarin) exactly as prescribed by your doctor. Take your dose of Coumadin (Warfarin) at the same time each day. If you miss a dose of Coumadin (Warfarin), notify your health care provider right away. Take the missed dose as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.

Store Coumadin (Warfarin) at room temperature, protect it from light and moisture, and keep it out of the reach of children.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.

Coumadin Side Effects

Many medications can cause side-effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes Coumadin (Warfarin). If you are concerned about side effects, discuss the risks and benefits of Coumadin (Warfarin) with your doctor.

The following side effects have been reported by at least 1% of people taking Coumadin (Warfarin). Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

  • changes in skin colour
  • Diarrhea
  • dizziness
  • fatigue
  • general feeling of being unwell
  • headache
  • nausea
  • weakness

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

  • heavier-than-normal menstrual bleeding
  • numbness or tingling of hands, feet, or face
  • rash or itching
  • signs of Anemia (low red blood cells; e.g., dizziness, pale skin, unusual tiredness or weakness, shortness of breath)
  • signs of clotting problems (e.g., unusual nosebleeds, bruising, blood in urine, coughing blood, bleeding gums, cuts that don't stop bleeding)
  • signs of "purple toe syndrome" (e.g., changing, mottled colour of toes, pain and tenderness of toes, sores that don't heal)
  • signs of liver damage (i.e., yellowing of skin or eyes, dark urine, light-coloured stools)
  • signs of serious skin damage (e.g., sores, changed skin colour or temperature)
  • sudden shortness of breath
  • unusual pain or swelling

Stop taking the medication and seek immediate medical attention if any of the following occur:

  • fainting
  • signs of a serious allergic reaction (i.e., swelling of face or throat, Hives, or difficulty breathing)
  • signs of bleeding (dark, tarry stools, bleeding in eye, blood in stools, blood in vomit or vomit that looks like coffee grounds, blood in urine, coughing up blood)
  • signs of bleeding in the brain (e.g., sudden or severe headache; sudden loss of coordination; vision changes; sudden slurring of speech; or unexplained weakness, or numbness)

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Coumadin (Warfarin).


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Coumadin Available Form

1 mg
Each pink, scored tablet with "COUMADIN" over "1" on one side contains 1 mg of Coumadin (Warfarin). Nonmedicinal ingredients: D&C Red No. 6 Barium Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

2 mg
Each lavender, scored tablet with "COUMADIN" over "2" on one side contains 2 mg of Coumadin (Warfarin). Nonmedicinal ingredients: FD&C Blue No. 2 Aluminum Lake, FD&C Red No. 40 Aluminum Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

2.5 mg
Each green, scored tablet with "COUMADIN" over "2.5" on one side contains 2.5 mg of Coumadin (Warfarin). Nonmedicinal ingredients: D&C Yellow No. 10 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

3 mg
Each tan, scored tablet with "COUMADIN" over "3" on one side contains 3 mg of Coumadin (Warfarin). Nonmedicinal ingredients: FD&C Blue No. 2 Aluminum Lake, FD&C Red No. 40 Aluminum Lake, FD&C Yellow No. 6 Aluminum Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

4 mg
Each blue, scored tablet with "COUMADIN" over "4" on one side contains 4 mg of Coumadin (Warfarin). Nonmedicinal ingredients: FD&C Blue No. 1 Aluminum Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

5 mg
Each peach-coloured, scored tablet with "COUMADIN" over "5" on one side contains 5 mg of Coumadin (Warfarin). Nonmedicinal ingredients: FD&C Yellow No. 6 Aluminum Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

6 mg
Each teal, scored tablet with "COUMADIN" over "6" on one side contains 6 mg of Coumadin (Warfarin). Nonmedicinal ingredients: FD&C Blue No. 1 Aluminum Lake, FD&C Yellow No. 6 Aluminum Lake, lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch.

10 mg
Each white, scored tablet with "COUMADIN" over "10" on one side contains 10 mg of Coumadin (Warfarin). Nonmedicinal ingredients: lactose anhydrous, magnesium stearate, and pregelatinized tapioca starch. There is no dye in this product.

Coumadin Contraindications

Do not take Coumadin (Warfarin) if you:

  • are allergic to Coumadin (Warfarin) or any ingredients of the medication
  • are pregnant
  • are undergoing certain types of surgery
  • do not have access to an adequate lab facility to get regular blood tests done
  • have a high risk of abortion, eclampsia, and preeclampsia (complications of pregnancy often associated with sudden onset of very high blood pressure)
  • have bleeding tendencies associated with active ulcers or overt bleeding of the stomach, genitourinary, or respiratory tracts; heart infection; brain Aneurysm; or bleeding associated with many other medical conditions
  • have certain blood disorders
  • have malignant hypertension
  • have recently had or are planning to have surgery of the central nervous system or the eye or surgery associated with trauma resulting in large open surfaces
  • have senility, Alcoholism, or psychosis, or other conditions where you may not be able to cooperate with taking the medication and having the necessary lab tests on a regular basis

Anticoagulation (blood thinning) should not take place in any situation where the risk of bleeding might be greater than the potential benefits of anticoagulation.


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Coumadin Precautions

There may be an interaction between Coumadin (Warfarin) and any of the following:

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

  • stop taking one of the medications,
  • change one of the medications to another,
  • change how you are taking one or both of the medications, or
  • leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with Coumadin (Warfarin). Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription) and herbal medications that you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or illegal drugs can affect the action of many medications, you should let your prescriber know if you use them.

Coumadin Warnings

Before you begin using a medication, be sure to inform your doctor of any medication conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Coumadin (Warfarin).

Bleeding: The most serious risk associated with Coumadin (Warfarin) is bleeding in any tissue or organ. The risk of bleeding is related to how much is taken and for how long.

It is extremely important to have regular blood tests (as recommended by your doctor) to ensure that the correct level of blood thinning is occurring. These blood tests measure your INR level to determine the dose of Coumadin (Warfarin). Your health care provider will adjust the dose of Coumadin (Warfarin) depending on the INR level to ensure you are not receiving too little medication (which may result in blood clots forming) or too much medication (which may result in bleeding).

Congestive heart failure: People with congestive heart failure may be more sensitive to the effects of Coumadin (Warfarin). If you have any heart problems, discuss with your doctor how Coumadin (Warfarin) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Coumadin (Warfarin), and whether any special monitoring is needed.

Dental or surgical treatment: It may be necessary to stop taking Coumadin (Warfarin) briefly before scheduled dental or surgical procedures. Make sure that everyone involved in your health care is aware that you are taking Coumadin (Warfarin).

Liver function: Liver disease or reduced liver function may cause Coumadin (Warfarin) to build up in the body, causing side effects, including severe bleeding. If you have liver problems, discuss with your doctor how Coumadin (Warfarin) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Coumadin (Warfarin), and whether any special monitoring is needed.

Medical conditions and other medications: If you have other medical conditions and are taking medications, discuss with your doctor how Coumadin (Warfarin) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Coumadin (Warfarin), and whether any special monitoring is needed.

Some conditions and medications affect the way Coumadin (Warfarin) works and may affect the dosing of Coumadin (Warfarin). Your doctor will recommend you get regular lab tests done.

Non-steroidal anti-inflammatory medications (NSAIDs): It is recommended that anyone taking NSAIDs such as acetylsalicylic acid (Asa) or Ibuprofen should be closely monitored to ensure that no change in anticoagulation dosage is required. NSAIDs can cause stomach ulcers or bleeding. If you notice any signs of bleeding, such as frequent nosebleeds, unexplained bruising, or black and tarry stools, notify your doctor as soon as possible.

Purple toes syndrome: Purple toes syndrome is a complication of Coumadin (Warfarin) treatment and consists of a dark, purplish or mottled colour of the toes, usually occurring 3 to 10 weeks (or later) after starting treatment with Coumadin (Warfarin). Major features of this syndrome include:

  • increasing and decreasing of the colour over time
  • pain and tenderness of the toes
  • purple colour of bottom surfaces and sides of the toes that turns white under moderate pressure and fades with elevation of the legs

Inform your doctor at once if you notice these symptoms.

Pregnancy: Coumadin (Warfarin) should not be used during pregnancy. It may pass to the developing fetus and cause birth defects or death as a result of bleeding. If you become pregnant while taking Coumadin (Warfarin), contact your doctor immediately.

Breast-feeding: It is not known if Coumadin (Warfarin) passes into breast milk. If you are a breast-feeding mother and are taking Coumadin (Warfarin), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of Coumadin (Warfarin) have not been established for children less than 18 years of age. However, the use of Coumadin (Warfarin) by children is necessary in certain situations.


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All material © 1996-2021 MediResource Inc. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health providers with any questions you may have regarding a medical condition.

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