BISLERI -S 100MG/5ML INJBisleriS 100 mg 5 mL injection is a prescription intravenous iron sucrose formulation, used primarily to quickly correct iron deficiency anemia when oral iron isn't sufficient or tolerated. It's especially helpful in cases such as: Iron deficiency anemia from chronic kidney disease (hemodialysis patients) Pregnant or lactating women in the 2nd 3rd trimester Inflammatory bowel disease with malabsorption When rapid iron repletion is needed (e. g.,