The hematogen does not have a lethal dose - in fact, it is not even a drug. But using it in large quantities can, of course, be a problem, since it contains a large amount of sugar and is very high in calories. Therefore, with the regular use of a large amount of hematogen, diabetes mellitus, overweight and all other consequences associated with this can develop.
No. Iron, the closer its content in the body to normal, the less absorbed.
Not even in the body. In hemoglobin.
The fact is that with chronic blood loss, iron in the blood lasts to the last, until its reserves in the body are exhausted. And, on the contrary, the level of iron in the blood is restored first of all, and only then it goes to restore reserves.
So, when the hemoglobin values are closer to normal, the absorption of iron already greatly inhibits; but the reserves still need to be replenished - and their volume is many times greater than the volume of iron circulating in the blood.
So you can enjoy hematogen calmly.
The only thing that can happen from excess is disorder stomach, gastritis and everything else that can happen to the stomach from any excess)