Is Phenprocoumon Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use Phenprocoumon? Is Phenprocoumon safe for nursing mother and child? Does Phenprocoumon extracts into breast milk? Does Phenprocoumon has any long term or short term side effects on infants? Can Phenprocoumon influence milk supply or can Phenprocoumon decrease milk supply in lactating mothers?

Phenprocoumon is not approved for sale by the U.S. Food and Drug Administration (FDA). Limited information indicates that anticoagulant maternal doses of phenprocoumon produce low levels in milk. Until more data are available, shorter-acting anticoagulants are preferred, especially if the infant is younger than 2 months.