1. если анемия смешанная жд и воспалительная, то можно добавить 200-300 мг витамина Ц к железу для повышения усвоения;
2 у менструируюших женшин причина жд анемии понятна, исключать ЖКК кровотечение только в особенных случаях:
Until proven otherwise, men and postmenopausal women with iron deficiency anemia are assumed to have GI blood loss. In premenopausal women, menses may be the cause of anemia. However, colonic and upper GI tract lesions, including cancer, have been reported in this group. Thus, premenopausal women who have iron deficiency anemia that cannot be explained by heavy menses, or those who have GI symptoms, should be evaluated for a GI cause.

еще вот такое - если за 40 и гемоглобин менее 100 г/л, то нужно обследоваться, или есть жда и симптомы и положительный тест:

all premenopausal women with iron deficiency anemia and either abdominal symptoms, a positive fecal occult blood test, or a hemoglobin of less than 10 g/dL, especially those over the age of 40 years, should undergo an endoscopic evaluation of the gastrointestinal tract.