Syntomycin is a drug I've never heard of and there is no such drug
listed in the Canadian drug book.  Probably it is an aminoglycoside (by
its name).  Aminoglycosides are *not* absorbed from the gi tract in any
significant amounts.  Furthermore, we use aminoglycosides all the time
in extremely premature babies.  Therefore there should never have been
any question about whether the baby should breastfeed.  Of course he
should.

If there is a question about the use of this drug, why not use another
drug which is definitely compatible with breastfeeding?

If this is not an aminoglycoside, send generic name.

Jack Newman, MD, FRCPC