A haemoglobin level of 10 g/dL indicates mild anaemia. Since you require a folic acid-free option, standard single-ingredient iron supplements are ideal. You can use over-the-counter Ferrous Sulfate or Ferrous Gluconate tablets. These contain pure iron without added folic acid. However, because of your complex medical history, please consult your oncologist before starting iron. Anaemia in cancer patients can be caused by various factors, such as inflammation or chemotherapy, rather than simple iron deficiency. Your oncologist needs to evaluate the exact cause to ensure iron supplementation is safe and effective for you.