Don't take megadoses. Store safely out of reach of children. Iron tablets look like candy, and children love them. Don't store in bathroom medicine cabinet. Heat and moisture may change action of mineral.
Intramuscular iron can leave unsightly black deposits in skin that mimic tattoo marks.
Weakness, collapse, pallor, blue lips, blue hands, blue fingernails, shallow breathing, convulsions, coma, weak, rapid heartbeat. Call doctor immediately. Don't stop CPR until help arrives. Seek emergency treatment. Chest pain Seek emergency treatment.