Iron supplement for anemic baby

My EBF baby (9months) has to start iron supplements due to her being anemic.

Has anyone given their baby iron and noticed constipation? I remember the iron in my prenatals causing constipation for me so I’m wondering if it’ll have the same effect on baby

Did you notice any side effects with the iron supplements?

I’m also back on my prenatals with iron since I’m still exclusively breastfeeding