Im taking prenatal vitamin and iron.but i have read that prenatal vitamin contain iron too. it will not be an overdose of iron if im taking both?

The main reasons: your doctor would recommend an additional iron supplement to your prenatal vitamin is that your prenatal vitamin does not contain the recommended amount (30 mg daily) or your iron level was found to be low/you were told you are anemic. A prenatal vitamin and an iron supplement taken together will often not be tolerated without nausea; separate them. Check with Doc if further questions. Good luck:)