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Definition of Teratogen, warfarin as

Medically reviewed by Min Clinic Staff | Updated: January 2026

Teratogen, warfarin as:

The anticoagulant warfarin (COUMADIN) is a known teratogen, an agent that can disturb the development of the embryo and fetus and lead to birth defects.

Warfarin taken by a woman during pregnancy can cause bleeding into the baby's brain (cerebral hemorrhage), underdevelopment (hypoplasia) of the baby's nose and stippling of the ends (the epiphyses) of the baby's long bones.