From the compendium of pharmaceutical specialities (CPS--Canadian
PDR):

1. Absorption from the human gastrointestinal tract 40% (good)
2. "Tranexamic acid passes over into the breastmilk during lactation
(as opposed to "into the breastmilk *not* during lactation?"), in
concentrations 1/100 of the corresponding serum levels (very good).

Further, *almost unheard of in the CPS*:  "The investigators are of
the opinion that tranexamic acid can be given during lactation without
risk to the child."

Jack Newman, MD, FRCPC