Hello, i have had extremely low iron, my ferritin was 4 until i recently had two iron infusions. i am still supplementing iron and accidentally took a multi vitamin with iron as well as two of my normal doses of iron. i took 100 mg in one day?

This is very likely fine but don’t take any further iron doses today. Resume your regular iron doses tomorrow. If you wish to incorporate the multivitamin in your regimen, decrease the amount of the supplemental iron by the amount contained in the multivitamin. If you still have questions, call your doctor. You should have repeat iron studies checked and your doctor can arrange that. Good luck!

As Dr. F states there is no harm done. Follow her advice. Only 10% of oral iron is actually absorbed so the iron in your multivitamin is a small load.