Can i take biotin and iron tablets at the same time?

Yes: There is no major known interaction.

Dr Fowler agreed

There is nothing: that would be potentially harmfully interactive about these two vitamin/mineral supplements being taken together. Sometimes, though, it is not the vitamin but the preparation (accompanying ingredients to make the vitamin palatable or absorbable) that may not sit well in your stomach together. But first, do you really need them? Healthy diet should be adequate; unproven effects on hair:)