The aim of this study was to evaluate the efficacy and tolerab山ty of iron protein succinylate in the treatment of iron-deficiency anemia in pregnancy. One hundred and thirty anemic pregnant women were studied. Inclusion criteria were iron-deficiency type of anemia, and hemoglobin levels below of 11.5, 10.9 and 10.3 g/dL for the three trimesters of pregnancy, respectively. Twenty-five women who presented pregnancy-related complications were excluded during treatment. The remaining 105 were treated with 1600-mg iron protein succinylate per os daily for a period of four months. A group of anemia-related clinical signs and symptoms, and hematological parameters were recorded at the beginning of treatment, as well as two and four months later. They included epider­mis and mucosal paleness, skin and nail lesions, glossitis, heart pulse, sickness, anorexia, apathy, ataxia, polypnea, insomnia, ner­vousness, paresthesias and other neurological symptoms; the hematological parameters included Hgb, hct, RBCs, WBCs, MCV, MCH, MCHC, PLTs, serum Fe and ferritin. Possible side or adverse effects were considered during treatment. The majority of symp­toms and signs of anemia were gradually improved. There was a statistically significant increase in the means of Hgb, hct, WBCs, MCV, MCH, PLTs and serum ferritin (p < 0.05). Anemia was effectively treated in 100/105 (95.2%) women, but not in five patients (4.8%) who displayed poor compliance to the therapeutic protocol. There were transient and mild side-effects in seven (6.6%) treated women, namely diarrhea, epigastralgia, vomiting, and nausea, which however, did not necessitate discontinuation of the therapeutic protocol. Iron protein succinylate is an effective and well tolerated treatment of iron-deficiency anemia in pregnancy.