This document discusses hematinics, which are nutrients that help form blood cells. It defines hematinics as iron, vitamin B12, and folate, and notes deficiencies can cause anemia. Various oral and parenteral hematinic preparations are listed, along with side effects like constipation. Interactions between hematinics and other drugs are described, such as penicillamine decreasing iron absorption. Hematopoietic growth factors that stimulate red blood cell production, like erythropoietin, are also mentioned.