No, though marshmallows are not the most healthy choice of foods during pregnancy, they also are not harmful, and though I tried to be as healthy as I could during my pregnancy, certain cravings you just have to give into, and so I had to enjoy some marshmallows during my pregnancy.
Yeah I agree with the lady above me. . .you're fine to eat marshmallows
read about it here
open the fourth and sixth green link
there on right side for more info
Marsh mellows do not contain drugs, caffeine, or alcohol, so yes you can eat them.