Answers:
Yes you can.
Why in the world would you want to do that? The antibiotics themselves may make available you diarrhea...as is repeatedly a side effect of several antibiotics...the milk of mag/laxatives will kind it greatly worse and possibly give cramping.
yes. within really shouldn't be any drug interaction between the two. but if you are still worried, appointment your pharmacist. also, flawless luck getting rid of the infection next to macrobid. might as very well stop an epidemic train next to a sheet of damp daily.
I would suggest calling the doctor or the pharmacist and asking.
Your best bet would be to call your pharmacist and ask.
One of the adjectives side effects of Macrobid is
diarrhea.