My ferritin levels have always been at the bottom.... 3 or 4, those who suffer know.... Lack of iron, lack of energy, dizziness, weakness, feeling of cold even in the summer.... After a month and a half of use, I was saved!!!! The image and feeling of strength and energy transformed!!!! I have used everything from iron, but nothing like this product!!!! Top of the tops!!!! I highly recommend it, thanks to my daughter who discovered it from her physiotherapist!!!!! No unwanted side effects to add, no stomach pain, no diarrhea, no waiting time before eating!!!!