A blood test showed I have extremely low iron; I was given 3 iron infusions that was to give me a big energy boost (didn't), and I no longer see that doctor. Would ferrous sulfate be of benefit? I am chronically fatigued, have no life, spend 70-80% of my time in bed, reading or sleeping - extremely depressing. I'm 67 years of age. Oh, and cannot take sulfa - side effects are extremely painful, so would this eliminate the ferrous sulfate? And is so, can you sugest something? Thanks so much for any info.