Just take it with vit c -helps absorb it better. And dont drink caffiene for an hr after cause it stops absorbtion. And yea can cause constipation.
There is a liquid form of iron supp that isnt as bad for blocking u up. cant remember the name tho

sent via my vortex manipulator
Did not know that - about the caffeine. Huh!

The liquid is Floradix or something.