my 2yo ate prenatal vitamins! help!

My 2yo ate 2 prenatal vitamins. The vitamins don't have iron in them so that's good. Can they still hurt him? Should i take him to the ER? // I had just got them out of the bottle to eat them, then sat them down on a table for a minute while i got mickey mouse on the tv. 🤦🏻‍♀️ I turned around to get them and they were gone.