iron deficiency anemia
"My experience with this drug was bad.  I had my first iron infusion at 11 in the morning and about 4 in the afternoon I was in the ER.  I had tremendous body aches and headache; I was vomiting very violently (to mention only a few symptoms). At the ER, they did bloodwork and determined that my iron levels were five times the normal.  I see in the other comments from other patients that their injection took them about 2 hours; mine took about 5 minutes"