There was a posting on Lactnet on November 6, 1997 that stated that a mother
taking 22.5 mg/day for cancer had a maximum level of 2.7 micrograms/liter of
milk.
Also, after 24 hours 85% of the methotrexate should be eliminated; at 48 hours
approximately 99%; and at 72 hours approximately 100%.
Frank J. Nice, DPA, CPHP