Iron bisglycinate + Vitamin C

Questions

Hello, I have a deficiency and other forms prescribed by the doctor did not agree with me. I was taking Bisglycinate by a different brand before and it wasn't enough. Can I take two of these at once and take them on alternate days to maximize absorption? Thank you
My doctor said I have low iron, however, what they prescribed me doesn't work well with my gut. Could this product be used to treat iron deficiency anemia?