My infusions were Feraheme, which is a 2-min IV push of 510mg instead of a drip for several hours. They are done in batched of 2 spread about
3-5 days apart. I was very anemic because of so much daily bleeding. My Hemoglobin was 8 on a scale when the low-end of normal is 13. Each infusion (as measured 3-4 weeks later) raised my Hemoglobin about
1 unit. So after 2 batches (4 infusions) I had only come up to about
11. I had a 3rd batch and blood work, but am waiting for the results. I imaging I am at 12 or close enough to 13 that they will not do another right away. But it is very expensive, even after insurance my copay is about
$250 per infusion. I still bleed daily and do not tolerate the oral iron very well, so I will get blood work in late summer and early fall to check. If I am low I want more infusions this year (not early next year), because I have now reached my copay cap.
I did feel more energy - especially after the 5th and 6th. It only lasted a couple of weeks, and it was more of relief form body ache and fatigue and not actual energy. No superman, sadly.
Not sure where you heard they could last 1-2 years. If you are bleeding, nothing will last - not even transfusions.
Best of luck