You will notice some improvement in a few day. Depending on how anemic you are it could take several weeks to be back to normal.
I agree a few days, but depending on how well your body responds and how low your levels are is a major factor. And how much you are taking affects it too
Think it takes at least a few days , the spa tone liquid sachets are brilliant for topping up iron as they don't interfere with your tummy like the tablets can. You can add them to fruit juice if you can't drink them straight from the sachet. And you feel the effects a lot faster the with the iron tablets