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Frequently Asked Questions

What are Warfarin Sodium Tablets, USP?
Zydus Warfarin is a generic medicine that has been approved by the FDA and is bioequivalent to Coumandin®*. Warfarin is a drug used to reduce the risk of abnormal or dangerous blood clots.

How do Zydus Warfarin Sodium Tablets, USP work?
Warfarin is an anticoagulant drug which is sometimes referred to as a “blood thinner”. Warfarin, however, works a little differently in that it actually slows down or prolongs the time it takes for your blood to clot. This helps prevent blood clots from forming or growing larger.

Why am I taking Zydus Warfarin Sodium Tablets, USP?
Your physician has prescribed Warfarin to help manage a condition in which dangerous blood clots could potentially form. Some of the conditions are as follows:

  • Atrial fibrillation – this is an abnormal beating of the heart or an irregular, rapid contraction of the atria (upper chambers of the heart).
  • Thrombonphlebitis in the legs
  • Hereditary disorder
  • Heart valve disease or an artificial hear valve
  • Heart attack

How often should I take Zydus Warfarin Sodium Tablets, USP?
Adhere to your physician’s directions exactly as it is extremely important to strictly follow your prescribed dosage schedule. You will be carefully monitored utilizing blood tests to ensure correct levels of warfarin are in your bloodstream. Your physician will also advise you to take warfarin once a day and at the same time each day. The best idea is to tie in taking your warfarin with another daily activity such as a meal time or even brushing your teeth in the morning. You may want to keep a calendar as well.

How much Zydus Warfarin Sodium Tablets, USP should I take?
Your dose is dependent upon the effect warfarin is having on your blood and may be changed by your physician based upon your blood tests. Blood tests that help determine how fast your blood clots are called a PT (prothrombin time) or protime. Your physician may record your PT as an INR (international normalized ratio). Utilizing your PT/INR test results, your physician will adjust your dose until the PT/INR is at a level to help your blood from forming harmful clots.

It is extremely important to determine the correct dose so in the beginning your blood will be tested frequently, maybe even daily. Once your PT/INR results are correct and stable, your physician may perform the blood tests less frequently. It is very important to keep your physician informed of any changes to your health, diet, other medications, or even your exercise routine in that these could all have an effect on warfarin in your bloodstream.

What if I forget to take my Zydus Warfarin Sodium Tablets, USP?
If you forget to take your warfarin at your normally scheduled time, or miss a dose of warfarin, it’s best to contact your physician immediately. Missing a dose can have an effect on your blood clotting time so it’s critical that you address the issue. If you missed your normal scheduled time to take your warfarin, take the dose as soon as you remember unless it’s almost time for your next dose. NEVER take a double dose of warfarin to make up for missing a dose or stop taking warfarin on your own. It’s always best to call your physician if you have any questions or issues.

What if I’ve been switched to Zydus Warfarin Sodium Tablets, USP from another warfarin sodium product?
Your physician will help and advise you in regards to the manufacture change though there will probably be no difference in the way or routine in which you took your previous medication.

It’s important to note, however, that once dosing has begun on Zydus Warfarin Sodium Tablets, USP you should not continue to take your old warfarin product unless directed to do so by your physician.

Can I still exercise if I’m taking Zydus Warfarin Sodium Tablets, USP?
If you currently have an exercise routine that contains contact or has a potential of a serious injury, it’s best that you speak with your physician first. Also, if you are changing your exercise pattern or planning to start one, remember to speak to your physician prior beginning your new activities.

Eating Right While on Warfarin


Some foods that you eat and the amount you eat of these items can affect the way warfarin works in your body. Vitamin K, which is found in most green leafy vegetables and some oils, helps your blood clot. You do not need to avoid Vitamin K foods, but you should not eat more or less than you usually eat. Your healthcare provider will regulate your warfarin therapy based on your current diet.

The most important thing while taking warfarin is to maintain a healthy, consistent diet and keep the amount of Vitamin K in your diet consistent from day to day.

Foods high in Vitamin K:

* Spinach * Cabbage
* Broccoli * Brussel Sprouts
* Soybeans & Soybean oil * Parsley
* Canola Oil * Tofu

For more information contact your healthcare provider or see complete prescribing information.

When do I need to contact my healthcare provider?
Contact your healthcare provider if you have the following:

  • New symptoms of diarrhea, nausea, vomiting, fever or chills.
  • Signs of bleeding such as:
    • Nosebleeds
    • Bleeding of the gums from brushing
    • Bleeding that doesn’t stop when you cut yourself
    • Heavy or prolonged menstrual period
    • Blood in stool or black tar-like stool
    • Red or dark brown urine
    • Unusual bleeding, bruising, swelling, pain or discomfort anywhere on your body
    • Headache, dizziness or weakness
  • Any fall or injury

You should also contact your healthcare provider if:

  • you are going to be away from home for a long period of time (vacation or long trip).
  • you are pregnant or plan on getting pregnant.
  • you are sick and taking over-the counter medicine.

How do other medications affect my Zydus Warfarin Sodium Tablets, USP?
Other medicines can increase or decrease the effect of warfarin sodium. Please consult your healthcare provider prior to changing your current medicines or adding another medication to your daily routine, including over-the-counter medicines such as Tylenol®, aspirin or cold remedies.

For more information contact your healthcare provider or see complete prescribing information.

Should I tell anyone that I am using Zydus Warfarin Sodium Tablets, USP?
Yes, you should tell your family and anyone giving you medical care (including doctors, nurses, pharmacists, and dentists) that you are taking warfarin.

You should also consider wearing a medical identification bracelet or carry a medical identification card (download and print) that alerts others that you are taking warfarin.

For more information contact your healthcare provider or see complete prescribing information.


Please refer to the full package insert for complete prescribing information.

Coumadin® is a registered trademark of Bristol-Myers Squibb Company

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