Pregnancy And Warfarin

Pregnancy & Warfarin: What You Should Know

Warfarin is an anticoagulant, or blood thinner, that is commonly prescribed to pregnant women who have certain medical conditions. It is used to help prevent blood from clotting and reduce the risk of dangerous complications during pregnancy. While warfarin is generally considered safe to use during pregnancy, it is important to discuss any risks and side effects with your healthcare provider.

When Is Warfarin Used During Pregnancy?

Warfarin is prescribed to pregnant women who are at a high risk of blood clots. This includes women who:

  • Have blood clotting disorders, such as Factor V Leiden and antithrombin deficiency
  • Have certain heart conditions
  • Have a history of prior blood clots
  • Are overweight or obese

In some cases, warfarin may be prescribed to prevent preterm labor.

Side Effects of Warfarin During Pregnancy

Some of the side effects that may be caused by warfarin during pregnancy include:

  • Nausea, vomiting, or diarrhea
  • Dizziness
  • Headache
  • Rash
  • Stomach pain

If you experience any of these side effects, contact your healthcare provider right away.

Risks of Using Warfarin During Pregnancy

Using warfarin during pregnancy carries some risks and risks should be discussed with your doctor. Some of the potential risks include:

  • Birth defects
  • Low birth weight
  • Premature labor
  • Pulmonary hypertension

It is also important to note that warfarin can cause bleeding problems. Your healthcare provider may monitor your blood clotting levels while you are using warfarin.


Pregnancy and warfarin can be a complex topic and it is important to weigh the benefits and risks when considering use of the drug during pregnancy. Speak with your healthcare provider to determine if warfarin is an appropriate therapy for you.

Pregnancy and Warfarin

Warfarin is a common anticoagulant that is prescribed for people with certain medical conditions. While most people are aware of its potential dangers, it is important to know the risks of using Warfarin during pregnancy.

Benefits of Warfarin During Pregnancy

Warfarin can help prevent dangerous blood clots from forming in the body. This is especially important during pregnancy, as the risks of blood clots are higher. Warfarin can also reduce the risk of miscarriage and preterm labor.

Risks of Warfarin During Pregnancy

Despite the potential benefits of Warfarin, it is important to be aware of the potential risks. The most common risks associated with using Warfarin during pregnancy include:

  • Birth defects.
  • Low birth weight.
  • Risk of hemorrhage in the baby.
  • Risk of complications with the placenta.

Alternatives to Warfarin During Pregnancy

Although Warfarin is the most common anticoagulant prescribed during pregnancy, there are other options available. Some other medications that can be used during pregnancy include:

  • Dabigatran etexilate(Pradaxa) – This medication has been approved by the FDA for use during pregnancy and is generally considered safe to use.
  • Heparin – This medication is generally considered to be safe and is often the preferred option for pregnant women.


Using Warfarin during pregnancy is generally not recommended due to its potential risks. However, in certain cases, it may be necessary. If you are considering taking Warfarin during pregnancy, it is important to speak to your doctor about the risks and benefits and discuss any alternatives that may be available.

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