Blood-thinning medications to avoid during pregnancy

If you take the blood-thinner medication warfarin (Coumadin, Jantoven) to reduce the risk of blood clot formation in atrial fibrillation, your doctor might recommend switching to a different blood thinner during all or part of your pregnancy. Warfarin may be associated with pregnancy risks.

Other blood thinners taken by mouth to prevent blood clots in atrial fibrillation, including dabigatran (Pradaxa), rivaroxaban (Xarelto) and apixaban (Eliquis), are not recommended during your pregnancy. There aren't enough studies to determine their effects and safety during pregnancy.