Before I broach the question of whether mothers can breastfeed with this medication, please, if you can possibly avoid it, use generic, not trade names. The last one Nomadine or whatever it is (labetelol), is a US but not Canadian trade name. Thus, I had no information about it. You are cutting off a fair number of lactnetters from possibly helping if you use US trade names. I know it is a pain in the neck, but it is like saying Similac instead of modified cow's milk. Phenelzine is a antidepressant of the MAO inhibiter type. There is little information I have about it in lactation. However, the Canadian equivalent of the PDR says "The potential benfit of this drug, if used during pregnancy, lactation or in women of childbearing age, should be weighed against the possible hazard to the mother or fetus". When the book says that, it must be super safe. Because even with little risk they usually say to discontinue lactation. Jack Newman, MD, FRCPC